By Andrew A. Smith Scripps Howard News Service Aug. 10, 2010 -- DC/Vertigo’s original graphic novel Revolver ($24.99) is a clever spin on the old alternate-world concept. As is almost typical in such stories, like “Mirror, Mirror” in Star Trek or the Justice League stories with the Crime Syndicate, the second world is awful. In Revolver, ordinary office schmoe Sam wakes up in an alternate unive…