C. A. 7th Cir. Certiorari granted in Nos. *106976-515, 76-520, and 76-522. Judgment vacated and cases remanded for further consideration in light of Village of Arlington Heights v. Metropolitan Housing Development Corp., ante, p. 252; and Washington v. Davis, 426 U. S. 229 (1976).
Mr. Justice Brennan, Mr. Justice Marshall, and Mr. Justice Stevens dissent.
