Eddie Murphy did not like losing the Academy Award for best supporting actor to Alan Arkin last night. He split the show — exit stage left! — as soon Arkin’s name was announced. Murphy didn’t stay to see Jennifer Hudson win best supporting actress in "Dreamgirls" or his fellow castmates Hudson, Beyonce, Keith Robinson and Anoki Noni Rose perform the show’s nominated songs in a stellar staging by "Dreamgirls" director/writer Bill Condon, who wasn't an Oscar nominee. That may have been the problem with "Dreamgirls" all along, as I’ve suggested before: Much as the movie depends on a song called...