share/gears: XSLTTransformer.class.php, QAL.class.php, Component.class.php + some documentation update + docconf file for building documentation by doxygen.

git-svn-id: https://energine.googlecode.com/svn/branches/php_documentation@2857 acdd3125-bb50-0410-93b3-95ffde4b7c7d