XXXX adding PID information to netstat output

@@ -161,10 +161,11 @@
 extern void     so_connected(sock_upper_handle_t, sock_connid_t, struct cred *,
     pid_t);
 extern int      so_disconnected(sock_upper_handle_t, sock_connid_t, int);
 extern void     so_txq_full(sock_upper_handle_t, boolean_t);
 extern void     so_opctl(sock_upper_handle_t, sock_opctl_action_t, uintptr_t);
+extern mblk_t   *so_get_sock_pid_mblk(sock_upper_handle_t);
 /* Common misc. functions */
 
         /* accept queue */
 extern int      so_acceptq_enqueue(struct sonode *, struct sonode *);
 extern int      so_acceptq_enqueue_locked(struct sonode *, struct sonode *);

@@ -231,10 +232,12 @@
 extern int      sonode_constructor(void *, void *, int);
 extern void     sonode_destructor(void *, void *);
 extern void     sonode_init(struct sonode *, struct sockparams *,
     int, int, int, sonodeops_t *);
 extern void     sonode_fini(struct sonode *);
+extern void     sonode_insert_pid(struct sonode *, pid_t);
+extern void     sonode_remove_pid(struct sonode *, pid_t);
 
 /*
  * Event flags to socket_sendsig().
  */
 #define SOCKETSIG_WRITE 0x1