Emerging Italian director Giovanni Tortorici, whose feature debut “Diciannove” made a splash last year after launcing from the Venice Horizons section, is in competition at the Locarno Film Festival with his followup, “Ketticè,” a coming-of-age drama set in 2012 Palermo, featuring Monica Bellucci who is among the film’s few professional actors. “Ketticè” explores the dynamics between