Author: Jason Fowler
MDL-29469 Enrolments - fixing the role assignment access elevation issue
http://git.moodle.org/gw?p=moodle.git;a=commit;h=2c5857186bedacee6399b3ae37405fd1091096ae
http://github.com/moodle/moodle/commit/2c5857186bedacee6399b3ae37405fd1091096ae
+ 2.2 en [role,enrol_self]