Wikimedia Bugzilla is closed!

Steps to reproduce:
1) Create [[Foo]]
2) Create [[MediaWiki:Foobarbaz.css]]
3) Attempt to move [[Foo]] to [[MediaWiki:Foobarbaz.css]]
4) When MW complains the destination page exists, check "Yes, delete the page" and continue
5) You get an exception:

`MediaWiki:Foobarbaz.css` is not a valid file title.

Backtrace:

#0 /home/catrope/mediawiki/trunk/phase3/includes/filerepo/File.php(104): File::normalizeTitle(Object(Title), 'exception')
#1 /home/catrope/mediawiki/trunk/phase3/includes/filerepo/LocalFile.php(149): File->__construct(Object(Title), Object(LocalRepo))
#2 /home/catrope/mediawiki/trunk/phase3/includes/filerepo/LocalFile.php(76): LocalFile->__construct(Object(Title), Object(LocalRepo))
#3 [internal function]: LocalFile::newFromTitle(Object(Title), Object(LocalRepo))
#4 /home/catrope/mediawiki/trunk/phase3/includes/filerepo/FileRepo.php(90): call_user_func(Array, Object(Title), Object(LocalRepo))
#5 /home/catrope/mediawiki/trunk/phase3/includes/GlobalFunctions.php(3264): FileRepo->newFile(Object(Title))
#6 /home/catrope/mediawiki/trunk/phase3/includes/specials/SpecialMovepage.php(379): wfLocalFile(Object(Title))
#7 /home/catrope/mediawiki/trunk/phase3/includes/specials/SpecialMovepage.php(93): MovePageForm->doSubmit()
#8 /home/catrope/mediawiki/trunk/phase3/includes/SpecialPageFactory.php(470): MovePageForm->execute(NULL)
#9 /home/catrope/mediawiki/trunk/phase3/includes/Wiki.php(237): SpecialPageFactory::executePath(Object(Title), Object(RequestContext))
#10 /home/catrope/mediawiki/trunk/phase3/includes/Wiki.php(605): MediaWiki->performRequest()
#11 /home/catrope/mediawiki/trunk/phase3/includes/Wiki.php(524): MediaWiki->main()
#12 /home/catrope/mediawiki/trunk/phase3/index.php(58): MediaWiki->run()
#13 {main}