COPYING
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     1 		   GNU LESSER GENERAL PUBLIC LICENSE
     1 		    GNU GENERAL PUBLIC LICENSE
     2                        Version 3, 29 June 2007
     2 		       Version 2, June 1991
     3 
     3 
     4  Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
     4  Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
       
     5  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
     5  Everyone is permitted to copy and distribute verbatim copies
     6  Everyone is permitted to copy and distribute verbatim copies
     6  of this license document, but changing it is not allowed.
     7  of this license document, but changing it is not allowed.
     7 
     8 
     8 
     9 			    Preamble
     9   This version of the GNU Lesser General Public License incorporates
    10 
    10 the terms and conditions of version 3 of the GNU General Public
    11   The licenses for most software are designed to take away your
    11 License, supplemented by the additional permissions listed below.
    12 freedom to share and change it.  By contrast, the GNU General Public
    12 
    13 License is intended to guarantee your freedom to share and change free
    13   0. Additional Definitions. 
    14 software--to make sure the software is free for all its users.  This
    14 
    15 General Public License applies to most of the Free Software
    15   As used herein, "this License" refers to version 3 of the GNU Lesser
    16 Foundation's software and to any other program whose authors commit to
    16 General Public License, and the "GNU GPL" refers to version 3 of the GNU
    17 using it.  (Some other Free Software Foundation software is covered by
    17 General Public License.
    18 the GNU Lesser General Public License instead.)  You can apply it to
    18 
    19 your programs, too.
    19   "The Library" refers to a covered work governed by this License,
    20 
    20 other than an Application or a Combined Work as defined below.
    21   When we speak of free software, we are referring to freedom, not
    21 
    22 price.  Our General Public Licenses are designed to make sure that you
    22   An "Application" is any work that makes use of an interface provided
    23 have the freedom to distribute copies of free software (and charge for
    23 by the Library, but which is not otherwise based on the Library.
    24 this service if you wish), that you receive source code or can get it
    24 Defining a subclass of a class defined by the Library is deemed a mode
    25 if you want it, that you can change the software or use pieces of it
    25 of using an interface provided by the Library.
    26 in new free programs; and that you know you can do these things.
    26 
    27 
    27   A "Combined Work" is a work produced by combining or linking an
    28   To protect your rights, we need to make restrictions that forbid
    28 Application with the Library.  The particular version of the Library
    29 anyone to deny you these rights or to ask you to surrender the rights.
    29 with which the Combined Work was made is also called the "Linked
    30 These restrictions translate to certain responsibilities for you if you
    30 Version".
    31 distribute copies of the software, or if you modify it.
    31 
    32 
    32   The "Minimal Corresponding Source" for a Combined Work means the
    33   For example, if you distribute copies of such a program, whether
    33 Corresponding Source for the Combined Work, excluding any source code
    34 gratis or for a fee, you must give the recipients all the rights that
    34 for portions of the Combined Work that, considered in isolation, are
    35 you have.  You must make sure that they, too, receive or can get the
    35 based on the Application, and not on the Linked Version.
    36 source code.  And you must show them these terms so they know their
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    37 rights.
    37   The "Corresponding Application Code" for a Combined Work means the
    38 
    38 object code and/or source code for the Application, including any data
    39   We protect your rights with two steps: (1) copyright the software, and
    39 and utility programs needed for reproducing the Combined Work from the
    40 (2) offer you this license which gives you legal permission to copy,
    40 Application, but excluding the System Libraries of the Combined Work.
    41 distribute and/or modify the software.
    41 
    42 
    42   1. Exception to Section 3 of the GNU GPL.
    43   Also, for each author's protection and ours, we want to make certain
    43 
    44 that everyone understands that there is no warranty for this free
    44   You may convey a covered work under sections 3 and 4 of this License
    45 software.  If the software is modified by someone else and passed on, we
    45 without being bound by section 3 of the GNU GPL.
    46 want its recipients to know that what they have is not the original, so
    46 
    47 that any problems introduced by others will not reflect on the original
    47   2. Conveying Modified Versions.
    48 authors' reputations.
    48 
    49 
    49   If you modify a copy of the Library, and, in your modifications, a
    50   Finally, any free program is threatened constantly by software
    50 facility refers to a function or data to be supplied by an Application
    51 patents.  We wish to avoid the danger that redistributors of a free
    51 that uses the facility (other than as an argument passed when the
    52 program will individually obtain patent licenses, in effect making the
    52 facility is invoked), then you may convey a copy of the modified
    53 program proprietary.  To prevent this, we have made it clear that any
    53 version:
    54 patent must be licensed for everyone's free use or not licensed at all.
    54 
    55 
    55    a) under this License, provided that you make a good faith effort to
    56   The precise terms and conditions for copying, distribution and
    56    ensure that, in the event an Application does not supply the
    57 modification follow.
    57    function or data, the facility still operates, and performs
    58 
    58    whatever part of its purpose remains meaningful, or
    59 		    GNU GENERAL PUBLIC LICENSE
    59 
    60    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
    60    b) under the GNU GPL, with none of the additional permissions of
    61 
    61    this License applicable to that copy.
    62   0. This License applies to any program or other work which contains
    62 
    63 a notice placed by the copyright holder saying it may be distributed
    63   3. Object Code Incorporating Material from Library Header Files.
    64 under the terms of this General Public License.  The "Program", below,
    64 
    65 refers to any such program or work, and a "work based on the Program"
    65   The object code form of an Application may incorporate material from
    66 means either the Program or any derivative work under copyright law:
    66 a header file that is part of the Library.  You may convey such object
    67 that is to say, a work containing the Program or a portion of it,
    67 code under terms of your choice, provided that, if the incorporated
    68 either verbatim or with modifications and/or translated into another
    68 material is not limited to numerical parameters, data structure
    69 language.  (Hereinafter, translation is included without limitation in
    69 layouts and accessors, or small macros, inline functions and templates
    70 the term "modification".)  Each licensee is addressed as "you".
    70 (ten or fewer lines in length), you do both of the following:
    71 
    71 
    72 Activities other than copying, distribution and modification are not
    72    a) Give prominent notice with each copy of the object code that the
    73 covered by this License; they are outside its scope.  The act of
    73    Library is used in it and that the Library and its use are
    74 running the Program is not restricted, and the output from the Program
    74    covered by this License.
    75 is covered only if its contents constitute a work based on the
    75 
    76 Program (independent of having been made by running the Program).
    76    b) Accompany the object code with a copy of the GNU GPL and this license
    77 Whether that is true depends on what the Program does.
    77    document.
    78 
    78 
    79   1. You may copy and distribute verbatim copies of the Program's
    79   4. Combined Works.
    80 source code as you receive it, in any medium, provided that you
    80 
    81 conspicuously and appropriately publish on each copy an appropriate
    81   You may convey a Combined Work under terms of your choice that,
    82 copyright notice and disclaimer of warranty; keep intact all the
    82 taken together, effectively do not restrict modification of the
    83 notices that refer to this License and to the absence of any warranty;
    83 portions of the Library contained in the Combined Work and reverse
    84 and give any other recipients of the Program a copy of this License
    84 engineering for debugging such modifications, if you also do each of
    85 along with the Program.
    85 the following:
    86 
    86 
    87 You may charge a fee for the physical act of transferring a copy, and
    87    a) Give prominent notice with each copy of the Combined Work that
    88 you may at your option offer warranty protection in exchange for a fee.
    88    the Library is used in it and that the Library and its use are
    89 
    89    covered by this License.
    90   2. You may modify your copy or copies of the Program or any portion
    90 
    91 of it, thus forming a work based on the Program, and copy and
    91    b) Accompany the Combined Work with a copy of the GNU GPL and this license
    92 distribute such modifications or work under the terms of Section 1
    92    document.
    93 above, provided that you also meet all of these conditions:
    93 
    94 
    94    c) For a Combined Work that displays copyright notices during
    95     a) You must cause the modified files to carry prominent notices
    95    execution, include the copyright notice for the Library among
    96     stating that you changed the files and the date of any change.
    96    these notices, as well as a reference directing the user to the
    97 
    97    copies of the GNU GPL and this license document.
    98     b) You must cause any work that you distribute or publish, that in
    98 
    99     whole or in part contains or is derived from the Program or any
    99    d) Do one of the following:
   100     part thereof, to be licensed as a whole at no charge to all third
   100 
   101     parties under the terms of this License.
   101        0) Convey the Minimal Corresponding Source under the terms of this
   102 
   102        License, and the Corresponding Application Code in a form
   103     c) If the modified program normally reads commands interactively
   103        suitable for, and under terms that permit, the user to
   104     when run, you must cause it, when started running for such
   104        recombine or relink the Application with a modified version of
   105     interactive use in the most ordinary way, to print or display an
   105        the Linked Version to produce a modified Combined Work, in the
   106     announcement including an appropriate copyright notice and a
   106        manner specified by section 6 of the GNU GPL for conveying
   107     notice that there is no warranty (or else, saying that you provide
   107        Corresponding Source.
   108     a warranty) and that users may redistribute the program under
   108 
   109     these conditions, and telling the user how to view a copy of this
   109        1) Use a suitable shared library mechanism for linking with the
   110     License.  (Exception: if the Program itself is interactive but
   110        Library.  A suitable mechanism is one that (a) uses at run time
   111     does not normally print such an announcement, your work based on
   111        a copy of the Library already present on the user's computer
   112     the Program is not required to print an announcement.)
   112        system, and (b) will operate properly with a modified version
   113 
   113        of the Library that is interface-compatible with the Linked
   114 These requirements apply to the modified work as a whole.  If
   114        Version. 
   115 identifiable sections of that work are not derived from the Program,
   115 
   116 and can be reasonably considered independent and separate works in
   116    e) Provide Installation Information, but only if you would otherwise
   117 themselves, then this License, and its terms, do not apply to those
   117    be required to provide such information under section 6 of the
   118 sections when you distribute them as separate works.  But when you
   118    GNU GPL, and only to the extent that such information is
   119 distribute the same sections as part of a whole which is a work based
   119    necessary to install and execute a modified version of the
   120 on the Program, the distribution of the whole must be on the terms of
   120    Combined Work produced by recombining or relinking the
   121 this License, whose permissions for other licensees extend to the
   121    Application with a modified version of the Linked Version. (If
   122 entire whole, and thus to each and every part regardless of who wrote it.
   122    you use option 4d0, the Installation Information must accompany
   123 
   123    the Minimal Corresponding Source and Corresponding Application
   124 Thus, it is not the intent of this section to claim rights or contest
   124    Code. If you use option 4d1, you must provide the Installation
   125 your rights to work written entirely by you; rather, the intent is to
   125    Information in the manner specified by section 6 of the GNU GPL
   126 exercise the right to control the distribution of derivative or
   126    for conveying Corresponding Source.)
   127 collective works based on the Program.
   127 
   128 
   128   5. Combined Libraries.
   129 In addition, mere aggregation of another work not based on the Program
   129 
   130 with the Program (or with a work based on the Program) on a volume of
   130   You may place library facilities that are a work based on the
   131 a storage or distribution medium does not bring the other work under
   131 Library side by side in a single library together with other library
   132 the scope of this License.
   132 facilities that are not Applications and are not covered by this
   133 
   133 License, and convey such a combined library under terms of your
   134   3. You may copy and distribute the Program (or a work based on it,
   134 choice, if you do both of the following:
   135 under Section 2) in object code or executable form under the terms of
   135 
   136 Sections 1 and 2 above provided that you also do one of the following:
   136    a) Accompany the combined library with a copy of the same work based
   137 
   137    on the Library, uncombined with any other library facilities,
   138     a) Accompany it with the complete corresponding machine-readable
   138    conveyed under the terms of this License.
   139     source code, which must be distributed under the terms of Sections
   139 
   140     1 and 2 above on a medium customarily used for software interchange; or,
   140    b) Give prominent notice with the combined library that part of it
   141 
   141    is a work based on the Library, and explaining where to find the
   142     b) Accompany it with a written offer, valid for at least three
   142    accompanying uncombined form of the same work.
   143     years, to give any third party, for a charge no more than your
   143 
   144     cost of physically performing source distribution, a complete
   144   6. Revised Versions of the GNU Lesser General Public License.
   145     machine-readable copy of the corresponding source code, to be
   145 
   146     distributed under the terms of Sections 1 and 2 above on a medium
   146   The Free Software Foundation may publish revised and/or new versions
   147     customarily used for software interchange; or,
   147 of the GNU Lesser General Public License from time to time. Such new
   148 
   148 versions will be similar in spirit to the present version, but may
   149     c) Accompany it with the information you received as to the offer
   149 differ in detail to address new problems or concerns.
   150     to distribute corresponding source code.  (This alternative is
   150 
   151     allowed only for noncommercial distribution and only if you
   151   Each version is given a distinguishing version number. If the
   152     received the program in object code or executable form with such
   152 Library as you received it specifies that a certain numbered version
   153     an offer, in accord with Subsection b above.)
   153 of the GNU Lesser General Public License "or any later version"
   154 
   154 applies to it, you have the option of following the terms and
   155 The source code for a work means the preferred form of the work for
   155 conditions either of that published version or of any later version
   156 making modifications to it.  For an executable work, complete source
   156 published by the Free Software Foundation. If the Library as you
   157 code means all the source code for all modules it contains, plus any
   157 received it does not specify a version number of the GNU Lesser
   158 associated interface definition files, plus the scripts used to
   158 General Public License, you may choose any version of the GNU Lesser
   159 control compilation and installation of the executable.  However, as a
   159 General Public License ever published by the Free Software Foundation.
   160 special exception, the source code distributed need not include
   160 
   161 anything that is normally distributed (in either source or binary
   161   If the Library as you received it specifies that a proxy can decide
   162 form) with the major components (compiler, kernel, and so on) of the
   162 whether future versions of the GNU Lesser General Public License shall
   163 operating system on which the executable runs, unless that component
   163 apply, that proxy's public statement of acceptance of any version is
   164 itself accompanies the executable.
   164 permanent authorization for you to choose that version for the
   165 
   165 Library.
   166 If distribution of executable or object code is made by offering
       
   167 access to copy from a designated place, then offering equivalent
       
   168 access to copy the source code from the same place counts as
       
   169 distribution of the source code, even though third parties are not
       
   170 compelled to copy the source along with the object code.
       
   171 
       
   172   4. You may not copy, modify, sublicense, or distribute the Program
       
   173 except as expressly provided under this License.  Any attempt
       
   174 otherwise to copy, modify, sublicense or distribute the Program is
       
   175 void, and will automatically terminate your rights under this License.
       
   176 However, parties who have received copies, or rights, from you under
       
   177 this License will not have their licenses terminated so long as such
       
   178 parties remain in full compliance.
       
   179 
       
   180   5. You are not required to accept this License, since you have not
       
   181 signed it.  However, nothing else grants you permission to modify or
       
   182 distribute the Program or its derivative works.  These actions are
       
   183 prohibited by law if you do not accept this License.  Therefore, by
       
   184 modifying or distributing the Program (or any work based on the
       
   185 Program), you indicate your acceptance of this License to do so, and
       
   186 all its terms and conditions for copying, distributing or modifying
       
   187 the Program or works based on it.
       
   188 
       
   189   6. Each time you redistribute the Program (or any work based on the
       
   190 Program), the recipient automatically receives a license from the
       
   191 original licensor to copy, distribute or modify the Program subject to
       
   192 these terms and conditions.  You may not impose any further
       
   193 restrictions on the recipients' exercise of the rights granted herein.
       
   194 You are not responsible for enforcing compliance by third parties to
       
   195 this License.
       
   196 
       
   197   7. If, as a consequence of a court judgment or allegation of patent
       
   198 infringement or for any other reason (not limited to patent issues),
       
   199 conditions are imposed on you (whether by court order, agreement or
       
   200 otherwise) that contradict the conditions of this License, they do not
       
   201 excuse you from the conditions of this License.  If you cannot
       
   202 distribute so as to satisfy simultaneously your obligations under this
       
   203 License and any other pertinent obligations, then as a consequence you
       
   204 may not distribute the Program at all.  For example, if a patent
       
   205 license would not permit royalty-free redistribution of the Program by
       
   206 all those who receive copies directly or indirectly through you, then
       
   207 the only way you could satisfy both it and this License would be to
       
   208 refrain entirely from distribution of the Program.
       
   209 
       
   210 If any portion of this section is held invalid or unenforceable under
       
   211 any particular circumstance, the balance of the section is intended to
       
   212 apply and the section as a whole is intended to apply in other
       
   213 circumstances.
       
   214 
       
   215 It is not the purpose of this section to induce you to infringe any
       
   216 patents or other property right claims or to contest validity of any
       
   217 such claims; this section has the sole purpose of protecting the
       
   218 integrity of the free software distribution system, which is
       
   219 implemented by public license practices.  Many people have made
       
   220 generous contributions to the wide range of software distributed
       
   221 through that system in reliance on consistent application of that
       
   222 system; it is up to the author/donor to decide if he or she is willing
       
   223 to distribute software through any other system and a licensee cannot
       
   224 impose that choice.
       
   225 
       
   226 This section is intended to make thoroughly clear what is believed to
       
   227 be a consequence of the rest of this License.
       
   228 
       
   229   8. If the distribution and/or use of the Program is restricted in
       
   230 certain countries either by patents or by copyrighted interfaces, the
       
   231 original copyright holder who places the Program under this License
       
   232 may add an explicit geographical distribution limitation excluding
       
   233 those countries, so that distribution is permitted only in or among
       
   234 countries not thus excluded.  In such case, this License incorporates
       
   235 the limitation as if written in the body of this License.
       
   236 
       
   237   9. The Free Software Foundation may publish revised and/or new versions
       
   238 of the General Public License from time to time.  Such new versions will
       
   239 be similar in spirit to the present version, but may differ in detail to
       
   240 address new problems or concerns.
       
   241 
       
   242 Each version is given a distinguishing version number.  If the Program
       
   243 specifies a version number of this License which applies to it and "any
       
   244 later version", you have the option of following the terms and conditions
       
   245 either of that version or of any later version published by the Free
       
   246 Software Foundation.  If the Program does not specify a version number of
       
   247 this License, you may choose any version ever published by the Free Software
       
   248 Foundation.
       
   249 
       
   250   10. If you wish to incorporate parts of the Program into other free
       
   251 programs whose distribution conditions are different, write to the author
       
   252 to ask for permission.  For software which is copyrighted by the Free
       
   253 Software Foundation, write to the Free Software Foundation; we sometimes
       
   254 make exceptions for this.  Our decision will be guided by the two goals
       
   255 of preserving the free status of all derivatives of our free software and
       
   256 of promoting the sharing and reuse of software generally.
       
   257 
       
   258 			    NO WARRANTY
       
   259 
       
   260   11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
       
   261 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
       
   262 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
       
   263 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
       
   264 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
       
   265 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
       
   266 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
       
   267 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
       
   268 REPAIR OR CORRECTION.
       
   269 
       
   270   12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
       
   271 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
       
   272 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
       
   273 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
       
   274 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
       
   275 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
       
   276 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
       
   277 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
       
   278 POSSIBILITY OF SUCH DAMAGES.
       
   279 
       
   280 		     END OF TERMS AND CONDITIONS
       
   281 
       
   282 	    How to Apply These Terms to Your New Programs
       
   283 
       
   284   If you develop a new program, and you want it to be of the greatest
       
   285 possible use to the public, the best way to achieve this is to make it
       
   286 free software which everyone can redistribute and change under these terms.
       
   287 
       
   288   To do so, attach the following notices to the program.  It is safest
       
   289 to attach them to the start of each source file to most effectively
       
   290 convey the exclusion of warranty; and each file should have at least
       
   291 the "copyright" line and a pointer to where the full notice is found.
       
   292 
       
   293     <one line to give the program's name and a brief idea of what it does.>
       
   294     Copyright (C) <year>  <name of author>
       
   295 
       
   296     This program is free software; you can redistribute it and/or modify
       
   297     it under the terms of the GNU General Public License as published by
       
   298     the Free Software Foundation; either version 2 of the License, or
       
   299     (at your option) any later version.
       
   300 
       
   301     This program is distributed in the hope that it will be useful,
       
   302     but WITHOUT ANY WARRANTY; without even the implied warranty of
       
   303     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
       
   304     GNU General Public License for more details.
       
   305 
       
   306     You should have received a copy of the GNU General Public License along
       
   307     with this program; if not, write to the Free Software Foundation, Inc.,
       
   308     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
       
   309 
       
   310 Also add information on how to contact you by electronic and paper mail.
       
   311 
       
   312 If the program is interactive, make it output a short notice like this
       
   313 when it starts in an interactive mode:
       
   314 
       
   315     Gnomovision version 69, Copyright (C) year name of author
       
   316     Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
       
   317     This is free software, and you are welcome to redistribute it
       
   318     under certain conditions; type `show c' for details.
       
   319 
       
   320 The hypothetical commands `show w' and `show c' should show the appropriate
       
   321 parts of the General Public License.  Of course, the commands you use may
       
   322 be called something other than `show w' and `show c'; they could even be
       
   323 mouse-clicks or menu items--whatever suits your program.
       
   324 
       
   325 You should also get your employer (if you work as a programmer) or your
       
   326 school, if any, to sign a "copyright disclaimer" for the program, if
       
   327 necessary.  Here is a sample; alter the names:
       
   328 
       
   329   Yoyodyne, Inc., hereby disclaims all copyright interest in the program
       
   330   `Gnomovision' (which makes passes at compilers) written by James Hacker.
       
   331 
       
   332   <signature of Ty Coon>, 1 April 1989
       
   333   Ty Coon, President of Vice
       
   334 
       
   335 This General Public License does not permit incorporating your program into
       
   336 proprietary programs.  If your program is a subroutine library, you may
       
   337 consider it more useful to permit linking proprietary applications with the
       
   338 library.  If this is what you want to do, use the GNU Lesser General
       
   339 Public License instead of this License.