Cheaters…women’s sex lives…Salman Rushdie…during March in the D.C. theater world, looks like anything goes; even Anything Goes. Starting off the month is George Bernard Shaw’s Fanny’s First Play, produced by Washington Stage Guild (March 2). This “comedy within a comedy” should prove witty enough, as Shaw always has a way with words. Speaking of renowned male authors, Haroun And The Sea Of Stories, a Salman Rushdie D.C. premiere, begins at the H Street playhouse this…