A tiny Boston Terrier named Ginger was literally ripped right off its owner's leash yesterday and sucked into the moving parts of a Dept. of Sanitation street sweeper. Robert Machin was getting into his car parked on the side of a street in the Soundview section of the Bronx. The door of his Honda Civic was still open and Machin was in the process of moving his dogs into the car, when witnesses said that......