8230373: Use java.io.Serial in generated exception types

Reviewed-by: erikj, alanb

make/scripts/genExceptions.sh

@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -60,6 +60,7 @@ public `if [ ${ABSTRACT:-0} = 1 ];
     extends ${SUPER}
 {
 
+    @java.io.Serial
     private static final long serialVersionUID = $SVUID;
 __END__