handle lgc.adbh api changes within regards of backup/restore: * new backup_commands method instead of backup_command * some backend still return command as string as expected by os.system, not subprocess.call

\.svn
^build$
^dist$
\.pyc$
\.pyo$
\.bak$
\.old$
\~$
\#.*?\#$
\.swp$
^doc/book/en/apidoc$