Author: Zig Tan
MDL-61568 repository_filesystem: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=d712722bd544d365c299cfaee972218ca23a336e
http://github.com/moodle/moodle/commit/d712722bd544d365c299cfaee972218ca23a336e
+ 3.5 en [privacy:metadata,repository_filesystem]