C. A. 5th Cir. (Certiorari granted, 379 U. S. 958.) Motion of Southern California Gas Co. et al. for leave to file brief, as •amici curiae, in Nos. 644 and 693 granted. Motion of State of California et al. for leave to file brief, as amici curiae, in No. 693 granted. John Ormasa, L. T. Rice, J. David Mann, Jr., and John E. Holtzinger, Jr., for Southern California Gas Co. et al. Richard E. Tuttle and J. Calvin Simpson for State of California et al.