Ian McKellan has got to be bitching his agent out this very second -- in an appearance at Carnegie Hall last week, J.K. Rowling revealed that Professor Albus Dumbledore, the late great headmaster of Hogwarts was actually -- gasp! -- a gay! Newsweek magazine broke the story: One fan asked whether Albus Dumbledore, the head of the famed Hogwarts School of Wizardry and Witchcraft, had ever loved anyone. Rowling smiled. "Dumbledore is gay, actually,"......