Back in the 1950s and early ’60s, there flourished a cinematic genre now sometimes called sword-and-sandal. Loosely speaking, this category included B-movies featuring Steve Reeves as Hercules, mighty epics such as “The Fall of the Roman Empire” and gorgeous fantasy swashbucklers, many with special effects by Ray Harryhausen, including “The 7th Voyage of Sinbad.” What weary aging heart wouldn’t love to be 12 again on a Saturday afternoon, seated at the Palace Theatre waiting for the opening credits of “Jason and the Argonauts”?