Lang tag fixing

I think the lang tags actually aren't case sensitive, so you don't need to worry about that. --Mwn3d 22:00, 12 November 2009 (UTC)

I'm doing this programmatically, so preserving case takes a little more code than making all the identifiers lowercase. But the fewer changes my program makes, the fewer difference regions I have to approve, so I'll preserve case. —Underscore (Talk) 22:42, 12 November 2009 (UTC)