JONATHAN M. PERRY has never been shy about being identified as gay at Johnson C. Smith University, a historically black college here. He tells anyone who asks, and plenty who don't. At 6-foot-2 and a trim 150 pounds, he's hard to miss. He sometimes paints his fingernails and toenails black and wears flip-flops so no one will miss the fashion statement. He has an ''I Like Your Boyfriend'' T-shirt. ''I don't believe in having any skeletons in any closets,'' he explains. So Mr. Perry was a logical choice to speak at a sorority-sponsored forum on AIDS during his sophomore year....
