Git commits in Moodle 3.0.5 by Skylar Kelty

commit 8f62c066ad067cd5a572d29a1f7876fa47f57a18
Author: Skylar Kelty <S.Kelty@kent.ac.uk>
Date:   Tue, 26 Apr 2016 15:35:00 +0800
Tag:    v3.0.5

MDL-53947 memcached: Fix memcached session warning on PHP7