[ticket/12638] Use require if phpbb_require_updated isn't available

PHPBB3-12638
[ticket/12610] Add command to check if the board is up to date.

PHPBB3-12610
[ticket/12610] Add test for the base case

PHPBB3-12610
[ticket/12610] Add options to update check command.

PHPBB3-12610
[ticket/12610] Correct header.

PHPBB3-12610
[ticket/12610] Correct codu=ing style and remove unused variable

PHPBB3-12610
[ticket/12656] Cache:purge command internationalized.

PHPBB3-12656
[ticket/12656] Config:delete command internationalized.

PHPBB3-12656
[ticket/12656] Config:get command internationalized.

PHPBB3-12656
[ticket/12657] Add a test file for base case

PHPBB3-12657
[ticket/12656] Config:increment command internationalized.

PHPBB3-12656
[ticket/12656] Config:set command internationalized.

PHPBB3-12656
[ticket/12657] Fix name temporary directory used by test file

PHPBB3-12657
[ticket/12656] Config:set-atomic command internationalized.

PHPBB3-12656
[ticket/12656] Db:migrate command internationalized.

PHPBB3-12656
[ticket/12656] Extension:disable command internationalized.

PHPBB3-12656
[ticket/12656] Extension:enable command internationalized.

PHPBB3-12656
[ticket/12656] Extension:purge command internationalized.

PHPBB3-12656
[ticket/12656] Extension:show command internationalized.

PHPBB3-12656
[ticket/12656] Fixup:recalculate-email-hash command internationalized.

PHPBB3-12656