JACKSONVILLE, Fla. — If it wasn’t clear how much power Tom Coughlin would wield in his return to Jacksonville, it became evident Thursday. Coughlin’s introductory news conference started five minutes sooner than initially scheduled, a you’re-early-or-you’re-late staple of Coughlin’s coaching career. Owner Shad Khan also said Coughlin will have final say on all football decisions,
