By Denny Dyroff, Entertainment Editor, The Times LP Two very impressive female-fronted rock acts will be sharing a bill on March 3 at the Theatre of the Living Arts (334 South Street, Philadelphia, 215-922-1011, http://www.lnphilly.com) – and both queer-friendly artists have cryptic names. For older music fans, LP refers to an album with LP taking its name from “Long Player.” Current music fans,...