CANNES, France -- Bouncing along the Croisette, the seafront boulevard in Cannes, Allen and Albert Hughes are in a good mood. The twins are on their way to a panel discussion featuring the top independent American filmmakers at the film festival. Their first feature, "Menace II Society," plays here in a few days and will open all over America on May 28. Major studios are bidding for their next project. They have just turned 21.