wp 3.8.1 compability


git-svn-id: http://plugins.svn.wordpress.org/qtranslate/trunk@845355 b8457f37-d9ea-0310-8a92-e5e31aec5664
2.5.39 release

git-svn-id: http://plugins.svn.wordpress.org/qtranslate/trunk@845820 b8457f37-d9ea-0310-8a92-e5e31aec5664
Merge remote-tracking branch 'svn/trunk'