Bernard B Jacobs Theatre, New York SE Hinton's novel, which was adapted by Francis Ford Coppola for film, makes for a competent yet forgettable stage show If Broadway must, for the same risk-averse pressures as Hollywood, keep rummaging through the library for more and more past touchstones to adapt, it could do worse than The Outsiders. SE Hinton's seminal young adult novel has been a staple of middle and high schoo…