Australia’s rough, macho culture is examined from a queer perspective in Sunflower, a tough coming-of-age, coming-out drama set in the suburbs of Melbourne. Director/writer Gabriel Carrubba’s debut introduces us to Leo (Liam Mollica), a handsome, strapping seventeen-year-old high school student. His home is a working-class Greek-Italian household with his truck driver dad (Sal Galofaro), mum…