Saint Of Fort Washington, TheFriendship. It's there for the good times. It's invaluable for the bad times. Jerry and Matthew have each other to rely on as they cope on New York City's mean streets. They also have a dream: to work their way back into the mainstream. Danny Glover and Matt Dillon give finely etched portrayals of life on society's fringe in this moving tale of friendship directed by Tim Hunter (Tex, River's Edge). Glover, who prepared for his role by going incognito