Git commits in Moodle 2.5.x by Ryan Panning

commit c6d7956e5503192702cf8d8e4cd01306b6ce18b2
Author: Ryan Panning <Ryan.Panning@district196.org>
Date:   Wed, 10 Apr 2013 14:38:05 +0800
Tag:    v2.5.0-rc1

MDL-38525: Assignment - print exception message when assignment upgrade fails.