Git commits in Moodle 2.9.0 by Matt Petro

commit e77bacab4fa8d06bf65fdd87a16991b8644d12c3
Author: Matt Petro <petro@engr.wisc.edu>
Date:   Wed, 03 Dec 2014 01:59:52 +0800
Tag:    v2.9.0-beta

MDL-48235 mod_assign: Fix reopen until pass behavior

commit f61992951d2f209eff1aab7c1481dac79dcad2bf
Author: Matt Petro <petro@engr.wisc.edu>
Date:   Fri, 19 Sep 2014 11:35:27 +0800
Tag:    v2.9.0-beta

MDL-47323 backup: added enrol plugin backup structure and annotation