REENWICH, Conn., Dec. 9 — When a deer hunt was proposed on 285 acres of pristine open land here owned by the Audubon center, it was not surprising that hunters, animal rights activists and bird lovers found themselves locked in battle. What was surprising was who was caught in the crossfire — Fairfield County's homeless.It started innocently enough when the Audubon, looking for ways to reduce the number of deer that had the run of the place, asked that any deer killed in the hunt go to feed the hungry. Similar programs have resulted in some 28,000 pounds of venison...