DANVILLE — An early-morning fire Saturday heavily damaged a large two-story home in the 400 block of West Mahoning Street here, but all living there escaped injury.A crashing sound startled John Brunetto, 44, around 4:30 a.m., when he was in his living room, he said. He soon spotted flames in a hallway upstairs.Brunetto, who works as a security officer at Danville State