BASTILLE DAY AT THE MARKET: Seattle's French restaurants are in Francophile overdrive tonight in celebration of French independence. Le Pichet (1933 First Ave.) starts its annual party at 6 p.m. and features Gypsy jazz until 11 p.m., when the d.j. takes over. Maximilien (81A Pike St.) has a special three-course dinner tonight for $35 and an accordion player. And Cafe Campagne (86 Pine St.) tops them all: a street fair is happening in Post Alley......