No. 80-1447. Summary Calendar. January 22, 1981. Rehearing and Rehearing En Banc Denied February 24, 1981. Daves, McCabe Crews, Joe K. Crews, Tyler, Tex., for plaintiffs-appellants. Charles Stephen Ralston, New York City, amicus curiae, for NAACP Legal Defense Educational Fund Inc. William H. Ng, Robert E. Williams, Douglas S. McDowell, Mary Louise Kibbey, Washington, D.C., amicus curiae, for E.E. O.C. Baker Botts, V. Reagan Burch, Jr., Joseph R. Weeks, Houston, Tex., for defendant-appellee. Appeal