CAT ON A HOT TIN ROOF DATES/SHOWTIMES: Sunday, November 20 3:45 URGENT TEXT: Introduced by Donald Bogle (1958, Richard Brooks) Okay, so he’s on crutches. But why is Paul Newman cold-shouldering his slip-clad wife, Elizabeth Taylor’s Maggie the Cat? And then Newman and “Big Daddy” Burl Ives (repeating from Tennessee Williams’ Broadway smash) discuss “mendacity.” DCP. Introduced by film historian Donald Bogle, author of the new book Elizabeth and Michael: The Queen of Hollywood and the King of Pop: A Love Story (published by Atria Books), hailed by columnist Liz Smith as