[qunit] Move qunit.js and qunit.css in devtools/datadirectory

[test] fix stupd name error

[test] fix test w/ closed connection pb

[ms] orderby/groupby/having attributes of Select node should be resetted to empty tuple, not None

[devtools/teslib] be more defensive on rollbacks

[rql2sql] when using HAVING to by-pass rql limitation (not to filter on result of an aggregat function), we should emit SQL that doesn't use HAVING to avoid potential backend error because variables are not grouped. Closes #1061603.

[doc/book/faq] question on security

[qunit] check that the browser has not died by himself before we asked him to stop.

[qunit] improve output of suprocess error The exception message now include the stdout and stderr of the called process

[test] workaround connection leak making tests fail under windows environment (though we've still probably some open connection leak to resolve...)

[web request] in python 2.5 hashlib has no .hash attribute

[web actions] fix recent refactoring, leading to missing redirect parameters in action's url

[packaging] more cleanups, handle javascript test files

backport stable

[facet] use vreg.parse so the rql syntax tree is properly annotated as well