Git commits in Moodle 2.4.x by Jonathan Champ

commit 8a592bd55197e057596516f59a378383c54a6078
Author: Jonathan Champ <jonathan_champ@ncsu.edu>
Date:   Wed, 19 Oct 2011 05:24:59 +0800
Tag:    v2.4.1

MDL-29733 grade: Query for Identifying Grade Grades to Precreate is SLOW