lintian: don't check haskell library packages for doc-base registration

[Erik de Castro Lopo <erikd@mega-nerd.com>]

Package: lintian
Version: 2.4.1
Severity: normal


Lintian is currently generating warnings for the -doc version of haskell library
packages like this:

    I: libghc6-XXX-doc: possible-documentation-but-no-doc-base-registration
    N: 
    N:    The package ships a .html or .pdf file under /usr/share/doc/, which are
    N:    usually documentation, but it does not register anything in doc-base.
    N:    (Files under an examples directory are excluded.)
    N:    
    N:    Refer to Debian Policy Manual section 9.10 (Registering Documents using
    N:    doc-base) for details.
    N:    
    N:    Severity: wishlist, Certainty: possible

This warning is redundant because all haskell library packages generated with
haskell-devscripts already link their documentation under the documenation of
the GHC haskell compiler.

Basically any package with a name matching the regex 'libghc-.*-doc' should
skip the possible-documentation-but-no-doc-base-registration test.

-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=ANSI_X3.4-1968) (ignored: LC_ALL set to C)
Shell: /bin/sh linked to /bin/dash

Versions of packages lintian depends on:
ii  binutils               2.20.1-11         The GNU assembler, linker and bina
ii  diffstat               1.47-1            produces graph of changes introduc
ii  dpkg-dev               1.15.7.2          Debian package development tools
ii  file                   5.04-2            Determines file type using "magic"
ii  gettext                0.17-11           GNU Internationalization utilities
ii  intltool-debian        0.35.0+20060710.1 Help i18n of RFC822 compliant conf
ii  libapt-pkg-perl        0.1.24            Perl interface to libapt-pkg
ii  libclass-accessor-perl 0.34-1            Perl module that automatically gen
ii  libipc-run-perl        0.89-1            Perl module for running processes
ii  libparse-debianchangel 1.1.1-2           parse Debian changelogs and output
ii  libtimedate-perl       1.2000-1          collection of modules to manipulat
ii  liburi-perl            1.54-1            module to manipulate and access UR
ii  locales                2.11.1-3          Embedded GNU C Library: National L
ii  man-db                 2.5.7-3           on-line manual pager
ii  perl [libdigest-sha-pe 5.10.1-13         Larry Wall's Practical Extraction 

lintian recommends no packages.

Versions of packages lintian suggests:
ii  binutils-multiarch            2.20.1-11  Binary utilities that support mult
pn  libtext-template-perl         <none>     (no description available)
ii  man-db                        2.5.7-3    on-line manual pager

-- no debconf information