Git commits in Moodle 2.7.5 by PJ King

commit 719c2dac88c8f9c8237bd14a929045f1a2f764ff
Author: PJ King <pking@sebts.edu>
Date:   Wed, 17 Dec 2014 23:57:09 +0800
Tag:    v2.7.5

MDL-46671 availability: DEBUG when course_module does not exist.