Git commits in Moodle 2.9.3 by Colin Campbell

commit f65bf24e5c713f4df37190e66d77e85e42afd40f
Author: Colin Campbell <colin@umn.edu>
Date:   Sat, 12 Sep 2015 04:23:06 +0800
Tag:    v2.9.3

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