Milwaukee Police say a man has admitted beating and stabbing a woman he called a “prostitute” until she died.  Twenty-nine-year-old John Gillum walked into a police station Sunday, telling officers he had committed a homicide.  Gillum says he argued with the woman over paying her for sex, beat her, stabbed her to death and wrapped her body in sheets, then dragged it into a shed behind his home.  He told officers he lost control during the argument and killed 19-year-old Morgan Huennekens with a knife and a pipe.