GREENBURGH, N.Y. — Carmelo Anthony can relate to Chris Paul. A year ago, the ‘Melo Drama hung over the NBA like a dark cloud. Now, the Paul sweepstakes –along with the Dwight Howard affair — threatens to dominate the NBA headlines for the upcoming season. Yet while Anthony was only involved in one successful trade, to the Knicks, Paul has already been involved in a failed trade to the Lakers and another stalled trade to the Lakers’ poor stepchild, the Clippers. The Clippers have reportedly offered center Chris Kaman, backup guard Eric