For the second time in three months, the Brinker International Forum has had to swap out celebrity guests -- once again because of a "scheduling conflict." (Do these people not have calendars? Or assistants with calendars?) After already getting a two-for-one deal in September, when Carl Reiner and Martin Short replaced John Travolta, the Brinker International Forum sends word this morning that two-time Oscar-winner Hilary Swank can't make Tuesday's showdown with Gary Cogill at the Morton H.