Git commits in Moodle 2.5.7 by Eric Merrill

commit 056c4c4d3b9f316aa77d93b793992a2d28fbe330
Author: Eric Merrill <merrill@oakland.edu>
Date:   Sun, 18 May 2014 11:46:44 +0800
Tag:    v2.5.7

MDL-45603 cache Fix the mappingsonly option to work as advertised.