[Probable jurisdiction noted, 414 U. S. 1142]; and [Probable jurisdiction noted, 415 U. S. 946.] Appeals from D. C. N. M. ‘ Motion of appellants for additional time for oral argument and for divided argument granted and 15 additional minutes allotted for that purpose. Appellees also allotted 15 additional minutes for oral argument. Motion of Mexican American Legal Defense & Educational Fund for leave to file a brief as amicus curiae granted.