STAMFORD-A homeless man was arrested and charged with spitting on a woman and threatening to kill a McDonald’s cashier Wednesday night. Blanc said that a woman complained to police that a man she knows from the homeless shelter, Kevin Joyner, 52, approached her as she was sitting on the ground on the Bedford Street side and began swearing at her as he walked up. Joyner, who also appeared intoxicated, also refused to leave and was placed in handcuffs and booked on charges of assault, disorderly conduct and threatening, Blanc said. Hohn, who two years ago headed up the Bureau of Criminal investigations that cracked the Muralles murder, said police will clear the block if they see people drinking alcohol, others causing a disturbance or blocking the sidewalk.