At one time kids savored August as the final act of summer’s symphony, when lightning bugs beckoned for a hole-punched Skippy jar, bare toes romped through cool grass, baseball cards hummed in bicycle spokes and the long days didn’t end until the streetlights came on well after dinner. Now, Georgia youngsters can barely dip a toe into August before they are yoked with bookbags and forced to schlep through stifling heat to climb onto even hotter school buses