C. A. 4th Cir. [Certiorari granted, 423 U. S. 945.] Motion of Anti-Defamation League of B'nai B'rith et al. for leave to file a brief as amici curiae in No. 75-62 granted. Motions of Council for American Private Education et al. and National Education Assn, for leave to file briefs as amici curiae granted.