Update copyright years and GPL version.

etc/charsets/README

 # README file for charset mapping files in this directory.
-# Copyright (C) 2003
+# Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
 #   National Institute of Advanced Industrial Science and Technology (AIST)
 #   Registration Number H13PRO009
-# Copyright (C) 2003 Free Software Foundation, Inc.
+# Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
+#   Free Software Foundation, Inc.
 
 # This file is part of GNU Emacs.
 
 # GNU Emacs is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
+# the Free Software Foundation; either version 3, or (at your option)
 # any later version.
 
 # GNU Emacs is distributed in the hope that it will be useful,
@@ -18,8 +19,8 @@
 
 # You should have received a copy of the GNU General Public License
 # along with GNU Emacs; see the file COPYING.  If not, write to
-# the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-# Boston, MA 02111-1307, USA.
+# the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301, USA.
 
 
 (1) Format of mapping files