San Antonio's Market Square will rock in Cinco de Mayo today like it's 1999, drawing crowds lining up for gorditas and suds. But in its native Mexico, the day won't inspire such bashes. Though it marks a victorious battle against the French in Puebla, Mexico's commemorations will be more subdued and historically based. advertisement It is remembered with pride, though. At the Battle of Puebla, Mexico was the underdog. With half as many soldiers, the Mexican army defeated 7,000 French troops, at least temporarily. Later, the French would regroup and run President Benito Juárez out of Mexico City to El...