Cyndi Lauper made Tracy Macdonald a very happy man Wednesday. Macdonald was one of 200 people on a seven-day Caribbean cruise this week after winning contests sponsored by MTV and Coca-Cola and Lauper, aboard the Superliner Jubilee, drew his name as the grand prize winner. Mcdonald, a video store employee from Pontiac, Mich., now gets a 25-acre island off the coast of Puerto Rico.