Git commits in Moodle 2.3.4 by Jonathan Champ

commit c2539fc41d2d369d3624bd0e45849ff6a41f4066
Author: Jonathan Champ <jonathan_champ@ncsu.edu>
Date:   Wed, 19 Oct 2011 05:24:59 +0800
Tag:    v2.3.4

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