Update copyright/license on new files?

[Simon Josefsson <jas@extundo.com>]

Some files, e.g. md4.el look like this:

;; Copyright (C) 2001 Taro Kawagishi
;; Author: Taro Kawagishi <tarok@transpulse.org>
;; Keywords: MD4
;; Version: 1.00
;; Created: February 2001

;; This file is part of FLIM (Faithful Library about Internet Message).

;; This program 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)
;; any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program; see the file COPYING.  If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

Should we change this into the standard Emacs stuff?  I assume so, but
thought I'd better check here first.

I believe copyright papers have been assigned for all the stuff I
added, but given the number of files I would appreciate if some
verified this independently.

The author of sasl-scram.el have assigned copyrights to the FSF for a
number of changes, but it is unclear if they apply to sasl-scram.el
too, I've asked assign@gnu.org to clarify.  Meanwhile, I haven't
installed that file.  It is not critical, so it shouldn't matter (the
SCRAM-MD5 SASL mechanism was never fully adopted, I believe).