Git commits in Moodle 2.9.5 by Michael Aherne

commit cf9e808967d7eacae0738043cdc56bda32fce281
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Wed, 23 Dec 2015 00:01:06 +0800
Tag:    v2.9.5

MDL-52589 cache: Allow unused stores to be uninstalled