Revert r46523, r46525. Spewing errors. See below. Behaviour observed on translatewiki.net.
PHP Notice: Undefined property: FakeConverter::$mMainLanguageCode in /var/www/w/languages/Language.php on line 2230
PHP Notice: Undefined property: FakeConverter::$mVariants in /var/www/w/languages/Language.php on line 2233
PHP Warning: in_array() [<a href='function.in-array'>function.in-array</a>]: Wrong datatype for second argument in /var/www/w/languages/Language.php on line 2233
PHP Notice: Undefined property: FakeConverter::$mMainLanguageCode in /var/www/w/languages/Language.php on line 2234