Billionaire businessman Ron Perelman's five-year marriage to actress Ellen Barkin is over — and the legendary corporate raider is getting out of the match just in time to save himself a huge bundle of money, sources said yesterday. The Revlon boss — who gained infamy in the late 1990s during a bitter custody battle with third wife Patricia Duff — served his latest spouse with divorce papers at their post Upper East Side mansion yesterday, a source familiar with the couple said. Under the pair's prenup, the bald buyout baron is set to pay the sultry "Sea of Love" actress...