Regen with blessed automake-1.15.1

This doesn't change anything except comments.

	* aclocal.m4: Regenerate.

intl/ChangeLog

+2020-02-20  Alan Modra  <amodra@gmail.com>
+
+	* aclocal.m4: Regenerate.
+
 2020-02-19  Andrew Burgess  <andrew.burgess@embecosm.com>
 
 	* configure: Regenerate.

intl/aclocal.m4

-# generated automatically by aclocal 1.16.1 -*- Autoconf -*-
+# generated automatically by aclocal 1.15.1 -*- Autoconf -*-
 
-# Copyright (C) 1996-2018 Free Software Foundation, Inc.
+# Copyright (C) 1996-2017 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,