CABIN FEVER (2003) director Eli Roth's sophomore feature serves notice to the self-referential fright films that flourished in the wake of Wes Craven's SCREAM (1996). It's a back-to-basics, gore-and-gristle look at the no-frills nastiness of 1970s films, in which monsters, mutants and ghosts can't hold a candle to the sheer, unadulterated evil that more