By HOWARD ULMAN Frank Spaziani is the new football coach at Boston College, promoted after spending 12 seasons as an assistant with the Eagles.Spaziani's appointment will be announced at a 3 p.m. news conference Tuesday, according to a person with knowledge of the decision who requested anonymity because the school had not made an announcement.Spaziani takes over for Jeff Jagodzinski, who was fired after he interviewed for the coaching job with the New York Jets.