CHARLOTTE, N.C. — You know what Charlotte really needs, and what the U.S. Presidents Cup team can help us all out with this weekend? An actual winning streak. Charlotte’s sports fans would like to stop getting battered by a hurricane of bad news and actually start celebrating a few wins in a row. Tuesday was a fine beginning, as the city of Charlotte landed the ACC headquarters, snatching it from Greensboro. That was a big deal for our city, albeit one drawn up in corporate boardrooms. But what we also need is a win on the field of play. That’s where the Presidents Cup at Quail Hollow Club can…