Disney-Marvel's " Black Panther " is heading for a super-heroic $218 million debut over the four-day President's Day weekend at 4,020 North American locations, estimates showed Sunday. That number means that " Black Panther ," starring Chadwick Boseman and directed by Ryan Coogler, has doubled its original tracking in less than a month. The film, which carries an estimated $200 million production cost, had been tracking to bring in between an impressive $100 and $120 million when first estimates emerged on Jan. 25. Since then, "Black Panther" has become a must-see movie for many moviegoers, underlined when Thursday previews brought in $25.2 million, the largest Thursday night preview gross for a February opener and the second-largest preview gross for a Marvel film. The film's estimated three-day gross of $192 million is the highest debut ever for a February film and the fifth highest of all time. Combined with an estimated international