Git commits in Moodle 2.6.9 by Tim Hunt

commit 71aeb8a9cb4cf06f0b4aa49daf527e5c866db30e
Author: Tim Hunt <T.J.Hunt@open.ac.uk>
Date:   Tue, 03 Mar 2015 21:11:35 +0800
Tag:    v2.6.9

MDL-49364 quiz statistics: escape output in the response analysis