Bug#616493: lintian: Should know about the Multi-Arch field

[Raphaël Hertzog <hertzog@debian.org>]

Package: lintian
Version: 2.5.0~rc1
Severity: normal
User: debian-dpkg@lists.debian.org
Usertags: multiarch

While building my multi-arch dpkg I noted this:
I: dpkg: unknown-field-in-control multi-arch
I: dselect: unknown-field-in-control multi-arch

Lintian should learn about this field and not complain if it contains
one of the allowed values (no, foreign, allowed, same).

https://wiki.ubuntu.com/MultiarchSpec

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (150, 'experimental')
Architecture: i386 (x86_64)

Kernel: Linux 2.6.37-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages lintian depends on:
ii  binutils               2.21.0.20110302-1 The GNU assembler, linker and bina
ii  diffstat               1.54-1            produces graph of changes introduc
ii  dpkg-dev               1.16.0            Debian package development tools
ii  file                   5.04-5            Determines file type using "magic"
ii  gettext                0.18.1.1-3        GNU Internationalization utilities
ii  intltool-debian        0.35.0+20060710.1 Help i18n of RFC822 compliant conf
ii  libapt-pkg-perl        0.1.24+b1         Perl interface to libapt-pkg
ii  libclass-accessor-perl 0.34-1            Perl module that automatically gen
ii  libemail-valid-perl    0.184-1           Perl module for checking the valid
ii  libipc-run-perl        0.89-1            Perl module for running processes
ii  libparse-debianchangel 1.1.1-2.1         parse Debian changelogs and output
ii  libtimedate-perl       1.2000-1          collection of modules to manipulat
ii  liburi-perl            1.58-1            module to manipulate and access UR
ii  locales                2.11.2-11         Embedded GNU C Library: National L
ii  locales-all [locales]  2.11.2-11         Embedded GNU C Library: Precompile
ii  man-db                 2.5.9-4           on-line manual pager
ii  perl [libdigest-sha-pe 5.10.1-17         Larry Wall's Practical Extraction 

lintian recommends no packages.

Versions of packages lintian suggests:
pn  binutils-multiarch            <none>     (no description available)
ii  libtext-template-perl         1.45-2     Text::Template perl module
ii  man-db                        2.5.9-4    on-line manual pager

-- no debconf information