Capsule reviews are by Philip Brandes (P.B.), F. Kathleen Foley (F.K.F.), Margaret Gray (M.G.), Charles McNulty (C.M.) and Daryl H. Miller (D.H.M.). Openings Hungry Writer-performer Michael Mullen reprises his Hollywood Fringe show. Studio/Stage, 520 Western Ave., Hollywood. Sun., 5 p.m. $12....