Andre Leon Talley is monumental in his corporal form, his personal journey and his fashion eminence.His story, as told by producer/director Kate Novack in her documentary, “The Gospel According to Andre,” represents a specific kind of American experience — of an outsider, a gay man and a black man at the apex of the fashion industry — an American dream come true.When his parents’ marriage fell apart, Andre was sent to live with his despotic-but-doting churchgoing grandmother in Durham, N.C.As …