Copyright for dvi2dvi source package in Jammy

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: dvi2dvi
Source: ftp://ftp.math.s.chiba-u.ac.jp/tex/

Files: *
Copyright: 1989-2001 Takafumi Sakurai 
License: BSD-2-Clause-modified

License: BSD-2-Clause-modified
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
 are met:
 1. Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
 2. Redistributions in binary form must include source code, or
    there must be a well-publicized means of obtaining the source
    code for no more than a reasonable reproduction cost.
 3. The package name of the modified software must not be ``dvi2dvi''
    or ``dvi2dvi-'' where  is the version number.
 .
 THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 SUCH DAMAGE.
Comment:
 See also copyright.ja.
 .
 The third clause was dropped by the upstream author in the following
 e-mail:
 .
 Return-Path: 
 Date: Mon, 26 Dec 2016 15:25:42 +0900
 Message-ID: 
 From: Takafumi SAKURAI 
 To: Christoph Biedl 
 Cc: Takafumi Sakurai 
 Subject: Re: dvi2dvi license and Debian
 In-Reply-To: <1482245225@msgid.manchmal.in-ulm.de>
 References: <1482089209@msgid.manchmal.in-ulm.de>
         <1482245225@msgid.manchmal.in-ulm.de>
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  FLIM/1.14.9 (=?ISO-2022-JP-2?B?R29qGyQoRCtXGyhC?=) APEL/10.8 Emacs/24.5
  (x86_64--netbsd) MULE/6.0 (HANACHIRUSATO)
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 .
 At Tue, 20 Dec 2016 15:57:47 +0100,
 Christoph Biedl wrote:
  >
  > To solve this situation I'd have to rename to package, but it has
  > been suggested[1] to contact you first. So can you perhaps clarify:
  >
  > * Perhaps you could drop that clause? It was the least trouble for
  >   anybody else.
 .
 OK, please drop that clause.
 .
     Takafumi SAKURAI (sakurai@math.s.chiba-u.ac.jp)