9704 move socket functions to libc

*** 27,40 ****
   * Use is subject to license terms.
   */
  
          .file   "_so_socket.s"
  
- /* C library -- _so_socket                                      */
  /*
!  * int _so_socket (int domain, int type, int protocol,
!  *                      dev_t dev, int version);
   */
  
  #include "SYS.h"
  
          SYSCALL2_RVAL1(_so_socket,so_socket)
--- 27,40 ----
   * Use is subject to license terms.
   */
  
          .file   "_so_socket.s"
  
  /*
!  * C library -- _so_socket
!  *
!  * int _so_socket(int, int, int, dev_t, int);
   */
  
  #include "SYS.h"
  
          SYSCALL2_RVAL1(_so_socket,so_socket)