XXXX adding PID information to netstat output

*** 28,37 ****
--- 28,38 ----
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  #include <sys/socket.h>
+ #include <sys/pidnode.h>
  
  /*
   * Generation count
   */
  typedef uint64_t sock_connid_t;
*** 198,207 ****
--- 199,209 ----
          void    (*su_txq_full)(sock_upper_handle_t, boolean_t);
          void    (*su_signal_oob)(sock_upper_handle_t, ssize_t);
          void    (*su_zcopy_notify)(sock_upper_handle_t);
          void    (*su_set_error)(sock_upper_handle_t, int);
          void    (*su_closed)(sock_upper_handle_t);
+         mblk_t *(*su_get_sock_pid_mblk)(sock_upper_handle_t);
  };
  
  #define SOCK_UC_VERSION         sizeof (sock_upcalls_t)
  #define SOCK_DC_VERSION         sizeof (sock_downcalls_t)