9704 move socket functions to libc

*** 198,217 ****
   * defined in _getsp.s
   */
  extern greg_t _getsp(void);
  
  /*
-  * defined in _so_setsockopt.s
-  */
- extern int _so_setsockopt(int, int, int, const char *, int);
- 
- /*
-  * defined in _so_getsockopt.s
-  */
- extern int _so_getsockopt(int, int, int, char *, int *);
- 
- /*
   * defined in lsign.s
   */
  extern int lsign(dl_t);
  
  /*
--- 198,207 ----