Changes for version 3.0.17
- incompatible change: default mask for msandbox user is now '127.%' instead of '%'. You can resume the old mask with --remote_access='%'
- added low privilege users msandbox_ro (SELECT EXECUTE), msandbox_rw (SELECT INSERT UPDATE CREATE DROP LOCK EXECUTE), and rsandbox (REPLICATION SLAVE)
- fixed bug in test_smoke (assumed 2 directories after cleaning, but 5.5 has also performance_schema)