As Setup.php assigns variables based on the cache config, bootstrap.php was late on reseting them, as some objects were already created.
So we could end up with a SqlBagOStuff created there, which when later accessed (such as trying to invalidate the cache for a user) would
-as any non-sqlite SqlBagOStuff- open a new db connection. Which is precisely what we shall not be done when dealing with temporary tables
(and would indeed fail miserably due to not finding unittest_objectcache table).
In summary, reenabling temporary tables disabled in r79411.
* MessageCache::singleton() calls wfGetMessageCacheStorage() directly instead of using $messageMemc, just in case this would be called before that variable is set
* Per TimStarling: also removed deprecated methods in MessageCache class: addMessages() and related, [get|set|enable|disable]Transform(), loadAllMessages(), loadMessageFile() and some others. Same for the legacyData stuff in LocalisationCache that was only used by MessageCache::addMessages() and related.
* Converted remaining extensions
Don't setup/destroy for databaseless tests.
Make needsDB() return based on the DocComment.
Delayed db init until the test is run, so that it isn't set for excluded tests (the exclusion is done after all the classes are instantiated).
lack of fuzz testing and other parser test options, and the DB creation is still a little flaky.
A MediaWikiPHPUnitCommand class had to be created to allow for custom CLI parameters.
-Add a working PHPUnit test that instantiates a new DB, adds set data, and deleted when done.
-Add listTables() to the Database classes (only MySql and SQLite use it, and only MySQL is tested)
