In “The Dressmaker,” Kate Winslet plays Myrtle “Tilly” Dunnage, a seamstress who returns to her tiny Australian hometown, nursing a lifelong grudge against her former neighbors and hoisting a Singer sewing machine like a six-shooter. Set in the early 1950s, this toxic tale of madness, mendacity, perversity and revenge is a manic, ultimately wearying pastiche of that era’s cinematic genres.