Gone are the days when "tailgating" meant a gathering resembling a picnic in a parking lot-maybe a cooler of drinks, some sandwiches and a battery-powered radio. Tailgating has evolved into an elaborate generator-beer- and meat- powered temporary settlement of outdoor living rooms and kitchens-and the food has gotten serious. Also serious are the costs. The following game-day indulgences might only represent the beginning of the scaling-up of tailgating supplies.