Add GFDL notice to doc/runtest.1

ChangeLog

@@ -1,5 +1,8 @@
 2020-08-31  Jacob Bachmeyer  <jcb@gnu.org>
 
+	* doc/runtest.1: Add brief GFDL notice.  License notice in the
+	formatted manpage should now describe DejaGnu as a whole.
+
 	* NEWS: Prepare for release.
 
 2020-08-18  Jacob Bachmeyer  <jcb@gnu.org>

doc/runtest.1

@@ -1,3 +1,8 @@
+.\" Copyright (C) 1993, 1995, 2001, 2002, 2003, 2004, 2005, 2008,
+.\"               2009, 2012, 2015, 2016, 2017, 2018, 2020
+.\"               Free Software Foundation, Inc.
+.\" You may distribute this file under the terms of the GNU Free
+.\" Documentation License.
 .TH runtest 1 "2018-12-01"
 .SH NAME
 runtest \- DejaGnu test driver
@@ -131,7 +136,7 @@ Rob Savoye (rob@welcomehome.org)
 .SH "REPORTING BUGS"
 Report bugs to <bug\-dejagnu@gnu.org>.
 .SH COPYRIGHT
-Copyright \(co 2005\-2016, 2018 Free Software Foundation, Inc.
+Copyright \(co 2005\-2016, 2018, 2020 Free Software Foundation, Inc.
 .PP
 This is free software.  You may redistribute copies of it under the terms of
 the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.