Git commits in Moodle 2.4.2 by Anthony Borrow

commit 88d7468a3bcba1629385c229546fff52a33debda
Author: Anthony Borrow <anthony@moodle.org>
Date:   Thu, 03 Jan 2013 11:03:06 +0800
Tag:    v2.4.2

MDL-15930 - admin: reorganize logic to allow ->fullnamedisplay to be used as default sort.