Stray dogs go on the rampage in Kornél Mundruczó’s vicious twist on man-mutt relations, while Ethan Hawke is silent but deadlyThere are films about dogs that are expressly for dog lovers, films about dogs designed to needle cynophobics, and then there’s White God (Metrodome, 15), a film about dogs that snappishly ticks both boxes while not really being about dogs at all.