It would be too much to say that Mike Nichols contained multitudes, but, whatever was going on in there, it must have been a hell of a party. Now that he has died, those of us who never met the guy are left to ponder just how many guys there were to meet: Nichols the comedian, Nichols the director of movies and TV, Nichols the director of plays, Nichols the producer, the writer, the guy with four wives and close frie…