Patrick Frater Asia Bureau ChiefHong Kong director Fruit Chan, who somehow manages to be an industry veteran and an enfant terrible at the same time, is currently in post-production on “Coffin Homes.” The film is a satirical horror anthology, that probes the city’s eternal housing problem, especially its micro dwellings known as cubicle apartments or coffin homes.Chan, who has long played in a social realist riff through titles including “Dumplings,” “The Midnight After” and Hollywood-Hong Kong,” takes the term literally and focuses his film on folks who are ready to live under the same roof as the dead.