Author: Eloy Lafuente (stronk7)
MDL-29248 backup: take rid of the setting and code handling the 'private' user filearea
http://git.moodle.org/gw?p=moodle.git;a=commit;h=ac6dc09c261219afa0191e9f2daf030bd071d272
http://github.com/moodle/moodle/commit/ac6dc09c261219afa0191e9f2daf030bd071d272
- 2.3 en [rootsettinguserfiles,core_backup]