A fun cast gives a bit of a young update on a classic western tale as Emilio Estevez climbs into the saddle as Billy the Kid in Christopher Cain’s Young Guns. Featuring a high-profile cast that included Lou Diamond Phillips, Kiefer Sutherland, Dermot Mulroney, Terence Stamp, Jack Palance and Terry O’Quinn. John Tunstall (Stamp) has…