Author: Matt Sammarco
MDL-18177 backup: Add backup option to include groups and groupings
http://git.moodle.org/gw?p=moodle.git;a=commit;h=868b086c4aefbc69eb3479a2312c0485154ce9c6
http://github.com/moodle/moodle/commit/868b086c4aefbc69eb3479a2312c0485154ce9c6
+ 2.9 en [configgeneralgroups,core_backup]
+ 2.9 en [generalgroups,core_backup]
+ 2.9 en [rootsettinggroups,core_backup]