Bearing a strong resemblance to “Quest For Fire,” “The Revenant,” “Jeremiah Johnson,” “The Grey,” the first chunk of “2001: A Space Odyssey” and maybe even a little bit of “The Lion King,” “Alpha” deftly mixes the survival, coming-of-age and shaggy dog genres to brilliant, mesmerizing effect. Set 20,000 years ago during the Upper Paleolithic period…