Ben Croll As he took questions both onstage and later out on the street following a Sunday night screening at the Torino Film Festival – where his film, “The Noise of Engines,” played in competition – director Philippe Grégoire found himself on the opposite end of an interaction he knew all too well.Like so many filmmakers, Grégoire himself was once an eager festivalgoer, often staying late after a screening to hear this or that director speak about their craft; in a move perhaps less common,