Git commits in Moodle 2.4.7 by Fred Woolard

commit 72b266d54e8abb96ff9f7783a07f6c8c9c93c57e
Author: Fred Woolard <woolardfa@appstate.edu>
Date:   Tue, 01 Oct 2013 03:51:35 +0800
Tag:    v2.4.7

MDL-42069 mod_quiz add lastname sort for manual grading