Git commits in Moodle 2.9.6 by Fred Woolard

commit b1b9ddc30287812de8cef32f31b22d6394ba97de
Author: Fred Woolard <woolardfa@appstate.edu>
Date:   Wed, 06 Apr 2016 04:29:32 +0800
Tag:    v2.9.6

MDL-53713 core: account for session_start returning false