“Once Upon a Time … in Hollywood” is the ninth film by director Quentin Tarantino, who has declared that his 10th film will be his last.Styled as a fable, the movie is a dreamy reflection on 1960s TV, spaghetti westerns and old Hollywood landmarks and watering holes.Joan Didion famously wrote that the 1960s ended in Los Angeles on Aug. 9, 1969, with the brutal murder of pregnant actress Sharon Tate, who …