Git commits in Moodle 2.4.4 by Ryan Panning

commit 1fbe4f46ba2e7cc4e57419748deff5ce30edfe07
Author: Ryan Panning <Ryan.Panning@district196.org>
Date:   Wed, 10 Apr 2013 14:38:05 +0800
Tag:    v2.4.4

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