C. A. 6th Cir. [Certiorari granted, 421 U. S. 928.] Motion to substitute Charles A. Hines as a party petitioner in place of Burtice A. Hines, deceased, granted. Motion of Prod, Inc., et al., for leave to file a brief as amici curiae granted. Motion of American Federation of Labor & Congress of Industrial Organizations for leave to file a brief as amicus curiae denied.