* p/ticket/9983:
[ticket/9983] Also check generic APC enable/disable.
[ticket/9983] Use APC instead of apc in error messages.
[ticket/9983] Skip tests if APC is not enabled for CLI.
[ticket/9983] Test for apc cache driver.
[ticket/9983] Add phpbb prefix to global variables.
[ticket/9983] Empty line by request.
[ticket/9983] Indeed, it is <?php.
[ticket/9983] Add a test for destroy.
[ticket/9983] Exercise exists also.
[ticket/9983] Add a purge test.
[ticket/9983] Rename test methods.
[ticket/9983] get/put cache test moved to a base class.
[ticket/9983] Create driver in setup in null driver test.
[ticket/9983] Split cache test into per-driver files.
[ticket/9983] Add redis cache driver tests.
* brunoais/ticket/10601:
[ticket/10601] The ORDER BY is only taking space there
[ticket/10601] New approach in the update algorithm
[ticket/10601] Comment to help understanding the code
[ticket/10601] Requested code changes
[ticket/10601] Cosmetic code changes
[ticket/10601] Database updating code v2
[ticket/10601] Database updating code
[ticket/10601] Comment explaning the basename applied to categories
[ticket/10601] Correctly access class property
[ticket/10601]Move Inbox the default in private messages module
In order to not overwrite data in default redis store, at least
one of redis host or post must be explicitly specified.
Redis cache driver constructor has been modified to accept
host and port as parameters. This was not added to public API
as there are more parameters being passed via global constants.
PHPBB3-9983
* bantu/ticket/10875:
[ticket/10875] tests/cache/cache_test.php: Use single quotes where possible.
[ticket/10875] Test for null cache driver and sql cache.
[ticket/10875] Revise sql cache test.
[ticket/10875] Must return query result on failure.
[ticket/10875] More documentation.
[ticket/10875] Spelling fix.
[ticket/10875] Add docblocks for phpbb_cache_driver_interface
[ticket/10875] Add comment about cache's sql_load() method.
[ticket/10875] Fix logic in phpbb_cache_driver_file::sql_save().
[ticket/10875] Fix phpbb_mock_cache::sql_save() to return $query_result.
[ticket/10875] Fix return value of phpbb_cache_driver_null::sql_save().
[ticket/10875] Remove useless assignment from phpbb_cache_driver_memory.
This shouldn't be done in the avatar drivers. We need to force the
display all avatar drivers in the ACP or it won't be possible to enable
avatars after they have been disabled.
PHPBB3-10018
Previously the driver class added a variable that defined wether an avatar
driver would return custom HTML. The existence of this variable was
implied in the interface. It's also not needed which is why it has been
removed.
PHPBB3-10018
