Carson McCullers, Erika Mann and Gypsy Rose Lee are sharing a house in Brooklyn. No, it's not the theme for a costume ball at Sarah Lawrence. It's a taste of February House, the heady new chamber musical at The Public (by way of Long Wharf) that may still be in need of some sharpening and editing to match its lofty ambitions, but still offers some refreshingly high-minded moments of musical theatre.