At 91, Clint Eastwood still knows how to direct a movie with a nice, clean leisurely classical spareness, something you wish more directors knew how to do (or wanted to). As a filmmaker, Eastwood has earned the right to be called ageless. As an actor, though, he’s not trying to hide his age. In “Cry Macho,” he plays a broken-down horse breeder and former rodeo rider who is given the task of going down to Mexico City to retrieve a 13-year-old boy, Rafael (Eduardo Minnett), and drive him back to Texas. (He’s taking the boy from his wealthy-diva Mexican mother and bringing him to his American ranch-owner father.) Eastwood is still handsome, and he still does the Clint sneer, with one side of his mouth open a tiny bit wider than the other side. But the Clint we see in “Cry Macho” is bent over, with a carefully combed shock of gray-white hair,...