[ticket/11753] Update MySQL upgrader schema data.

PHPBB3-11753
[ticket/11753] Remove ?> from MySQL Upgrader.

PHPBB3-11753
Merge remote-tracking branch 'bantu/ticket/11753' into prep-release-3.0.12

* bantu/ticket/11753:
  [ticket/11753] Remove ?> from MySQL Upgrader.
  [ticket/11753] Update MySQL upgrader schema data.