Halfway through the 62nd installment of the Berlin Film Festival, no single film has emerged to carry the fest’s top prizes. The international jury, this year’s headed by British director Mike Leigh, will have a difficult time distributing the Gold and Silver bears if the competition fare remains this lackluster. Benoît Jacquot’s French-Revolution drama, Les Adieux à la Reine was the firing shot in a festival year that is taking a hard look