C. A. 8th Cir. [Certiorari granted, 393 U. S. 975.] Request of the United States to participate in oral argument as amicus curiae granted and a total of 20 minutes allotted for that purpose. Counsel appointed to argue in support of judgment of lower court [393 U. S. 1061] shall likewise be allotted an additional 20 minutes to present oral argument in this case.