Added IRIX compile fixes

Added functions that must be handed down
   from wxListCtrl to the main window


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@578 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk1/utilsgtk.cpp

@@ -375,7 +375,12 @@ static void GTK_EndProcessDetector(gpointer data, gint source,
 
   pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
 
+  /* wait4 is not standard, use at own risk */
+#if !defined(__sgi)
   wait4(proc_data->pid, NULL, 0, NULL);
+#else
+  wait3(NULL, 0, NULL);
+#endif
 
   close(source);
   gdk_input_remove(proc_data->tag);