(Reuters) -Dave Ryding won the Kitzbuehel men’s slalom on Saturday in a first for a British skier in the 55-year-history of the Alpine World Cup and with the Beijing Olympics only weeks away. Norway’s Lucas Braathen and Henrik Kristoffersen were second and third respectively in the most prestigious slalom on the men’s circuit. Ryding, 35, also became the oldest winner of a men’s World Cup slalom and kissed the snow as he crossed the finish line in the Austrian resort. “I guess there’s life in the old dog yet,” he told Eurosport television, whose excited commentator told British viewers not to …