Gay Fiction Comes Home
LEAD: DURING this century, a few lonely voices -not all of them gay males - have created landmark fiction about the homosexual experience. One thinks of Thomas Mann, E. M. Forster, Andre Gide, Jean Genet, Christopher Isherwood, William Burroughs, Gore Vidal, Carson McCullers, James Baldwin. But in the last few decades, these singular voices have blended into a larger chorus.