Git commits in Moodle 2.2.5 by Sun Zhigang

commit 7add6bb507057f8be792f1956951d836cbc84032
Author: Sun Zhigang <sunner@gmail.com>
Date:   Sat, 02 Jul 2011 18:41:26 +0800
Tag:    v2.2.5

MDL-28155 mod_assignment - Fix an ugly hack