Git commits in Moodle 2.1.x by Jean-Michel Vedrine

commit ef4cf3917467d3bf419324e8cb1fdbca160f9a07
Author: Jean-Michel Vedrine <vedrine@vedrine.org>
Date:   Mon, 26 Sep 2011 05:30:40 +0800
Tag:    v2.1.2

MDL-29270 Fixed question bank backup converter (field rename)