Reynold’s take on the outlaw hero who defeats the tyrannous Sheriff of Nottingham is melodramatic, absurd and occasionally fun. The pompous, swashbuckling score failingly attempts to inject significance and heroism into Robin’s journey. The casting is patchy at best. Costner’s more Peter Pan than Robbin, Mastrantonio lacks Marion’s tenacity, Freeman’s Moor suffices and Rickman’s antagonist…