By Mary Milliken LOS ANGELES Thu Sep 25, 2014 8:13pm EDT (Reuters) – After watching the “The Equalizer,” moviegoers might never see the friendly guy at the home improvement store who picks out their tools and plywood in the same way. In the action thriller that opens in U.S. theaters Friday, Denzel Washington plays McCall, an efficient, mild-mannered employee at Home Mart, who also happens to have a past as a trained killer and a […]