Handle fork1/forkall on uw, handle rfork1,rforkall,rexecve and ssisys on uw non-stop-clusters
diff --git a/svr4/syscall.h b/svr4/syscall.h
index 21cf8d3..22b55f1 100644
--- a/svr4/syscall.h
+++ b/svr4/syscall.h
@@ -326,6 +326,9 @@
 extern int sys_xgetsockopt ();
 extern int sys_xsetsockopt ();
 extern int sys_xshutdown ();
+extern int sys_rfork ();
+extern int sys_ssisys ();
+extern int sys_rexecve ();
 #endif
 #endif /* !MIPS */