Author: Zig Tan
MDL-61568 repository_upload: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=1c86c7ddc172c34dadaa3004cc876fbc33b924de
http://github.com/moodle/moodle/commit/1c86c7ddc172c34dadaa3004cc876fbc33b924de
+ 3.4 en [privacy:metadata,repository_upload]