Henry V is officially categorized as one of Shakespeare's histories, though to me it's more specific than that: It's his Boy Play. Don't get me wrong. It's a fine play, at points a very great one, if not the equal of the two parts of Henry IV that precede it. But its central themes, almost unremittingly, are guts and glory, bonding and battle. In the Lantern Theater Company's smart version, judicious script cuts have…