add ucscNames option to hal2maf
essentially undo 9b19965bab9a1eee7e5c5040c75a64523e4c804d and 485ccf0c42fa67f58f54ea61a0cd7da519aacb02 which, by mucking with reverse coordinates, badly broke maf export and column iteration.  wish i could remember what on earth i was thinking as there must have been a reason