Bug#709139: lintian: add debian/copyright check for Debian copyright owwners

[Jari Aalto <jari.aalto@cante.net>]

Package: lintian
Version: 2.5.10.5
Severity: wishlist

The new Copyright Format 1.0 lists Debian copyrights in stanza:

    Files: debian/*
    Copyright:
      2006-2011 Jari Aalto <jari.aalto@cante.net>
      1998-2000, 2002-2004 Thimo Neubauer <thimo@debian.org>
    License: LGPL-2+

It's easy to miss listing people that have worked with the package and
own the Copyright too:

  # Roughly something like this

  $ cd ace-of-penguins/debian

  $ awk '/ -- .*>/ {printf("%d %s %s %s\n", $(NF - 2), $2, $3,$4)}' changelog |
    sort -ru

    2013 Jari Aalto <jari.aalto@cante.net>
    2012 Jari Aalto <jari.aalto@cante.net>
    2011 Jari Aalto <jari.aalto@cante.net>
    2010 Jari Aalto <jari.aalto@cante.net>
    2010 Jakub Wilk <jwilk@debian.org>
    2009 Jari Aalto <jari.aalto@cante.net>
    2006 Jari Aalto <jari.aalto@cante.net>
    2005 dann frazier <dannf@debian.org>
    2005 Steve Langasek <vorlon@debian.org>
    2004 Thimo Neubauer <thimo@debian.org>
    2003 Thimo Neubauer <thimo@debian.org>
    2002 Thimo Neubauer <thimo@debian.org>
    2001 Adrian Bunk <bunk@fs.tum.de>
    2000 Thimo Neubauer <thimo@debian.org>
    1999 Thimo Neubauer <thimo@debian.org>
    1998 Thimo Neubauer <thimo@debian.org>

Please consider adding a check that would parse the people from "--"
lines of debian/changelog and see that they are listed in
debian/copyright.

-- System Information:
Debian Release: 7.0
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_DK.UTF-8, LC_CTYPE=en_DK.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages lintian depends on:
ii  binutils                       2.22-8
ii  bzip2                          1.0.6-4
ii  diffstat                       1.55-3
ii  file                           5.11-2
ii  gettext                        0.18.1.1-9
ii  hardening-includes             2.2
ii  intltool-debian                0.35.0+20060710.1
ii  libapt-pkg-perl                0.1.26+b1
ii  libarchive-zip-perl            1.30-6
ii  libc-bin                       2.13-38
ii  libclass-accessor-perl         0.34-1
ii  libclone-perl                  0.31-1+b2
ii  libdpkg-perl                   1.16.10
ii  libemail-valid-perl            0.190-1
ii  libipc-run-perl                0.92-1
ii  libparse-debianchangelog-perl  1.2.0-1
ii  libtimedate-perl               1.2000-1
ii  liburi-perl                    1.60-1
ii  locales                        2.13-38
ii  man-db                         2.6.2-1
ii  patchutils                     0.3.2-1.1
ii  perl [libdigest-sha-perl]      5.14.2-21

lintian recommends no packages.

Versions of packages lintian suggests:
pn  binutils-multiarch     <none>
ii  dpkg-dev               1.16.10
ii  libhtml-parser-perl    3.69-2
pn  libperlio-gzip-perl    <none>
ii  libtext-template-perl  1.45-2
ii  man-db                 2.6.2-1
ii  xz-utils [lzma]        5.1.1alpha+20120614-2

-- no debconf information