It wasn’t enough for a victory, and it might not even have been enough to give Florida State fans a great deal of confidence for the second half of the season. But the FSU youth movement on offense showed some signs of promise in Saturday night’s 29-13 loss to No. 15 Clemson at Doak Campbell Stadium. With redshirt freshman Brock Glenn making his first start of the year at quarterback and several other first- and second-year players making significant contributions, the Seminoles’ passing attack at least gave them a chance to be competitive. Despite the 16-point final margin, it was a 10-point …