Git commits in Moodle 2.3.2 by Justin Filip

commit 44ec173ea8fea922f191508d317ab6f5d682f952
Author: Justin Filip <jfilip@gmail.com>
Date:   Sat, 03 Dec 2011 03:55:27 +0800
Tag:    v2.3.2

MDL-29598 backup Check whether a grade_letters record exists before trying to insert a new record