Git commits in Moodle 2.8.9 by Colin Campbell

commit a03a01f2addc99d5fb16a5b091729a2a17054568
Author: Colin Campbell <colin@umn.edu>
Date:   Sat, 12 Sep 2015 04:23:06 +0800
Tag:    v2.8.9

MDL-51305 grade: Fix slow grade operations by setting grade_item early.