9704 move socket functions to libc

@@ -27,14 +27,15 @@
  * Use is subject to license terms.
  */
 
         .file   "_so_recvfrom.s"
 
-/* C library -- __so_recvfrom                                   */
 /*
- * int __so_recvfrom(int sock, void *buffer, size_t len, int flags,
- *               struct sockaddr *addr, size_t *addrlen)
+ * C library -- __so_recvfrom
+ *
+ * ssize_t __so_recvfrom(int, void *, size_t, int, struct sockaddr *,
+ *     socklen_t *)
  */
 
 #include "SYS.h"
 
         SYSCALL2_RESTART_RVAL1(__so_recvfrom,recvfrom)