Git commits in Moodle 2.6.8 by Damyon Wiese

commit cc496f5b27d36a8df4bcede997a484eb9719363b
Author: Damyon Wiese <damyon@moodle.com>
Date:   Tue, 27 Jan 2015 23:16:10 +0800
Tag:    v2.6.8

MDL-48980 Security: Always clean the result from min_get_slash_argument