Git commits in Moodle 3.4.x by Mike Churchward

commit 860f59b13cf6618cf502820846dbae09db297a6e
Author: Mike Churchward <mike.churchward@poetgroup.org>
Date:   Wed, 06 Sep 2017 04:36:01 +0800
Tag:    v3.4.0-beta

MDL-60029 core_user: Added new api function to reduce db calls.