The timeless story of the March sisters — Meg, Jo, Beth, and Amy — in Louisa May Alcott’s beloved 19th-century novel, “Little Women,” has long been hailed as a romance, a quest story, a moral meditation on virtue and even a proto-feminist exploration of choices. The tale has been adapted countless times for stage, film and musical presentation. Now, in an unusual “double-feature,” the University of Colorado Theatre & Dance Department and College of Music will present two distinct musical visions of Little Women, composer Mark Adamo’s opera and the Broadway musical by Allan Knee, Mindi Dickstein and Jason Howland.