Bug#708178: lintian: Improve the version information of packages bundled with the Perl core

[Niko Tyni]

Package: lintian
Version: 2.5.10.5 
Tags: patch
X-Debbugs-Cc: perl at packages.debian.org

#708020 made me curious about why the
libjavascript-minifier-xs-perl_0.09-1 source package doesn't trigger the
'versioned-dependency-satisfied-by-perl' tag.

It turns out that private/refresh-perl-provides is rather simple minded
about the mapping between CPAN and Debian version numbers. I expect this
has caused a number of false negatives.

We've since tackled very similar issues in the maintainer tests of the
perl source package, where we check that the versioned Breaks of the
binary packages make sense. The meat of the attached patch set is based
on this work.

Please consider these patches for Lintian.
-- 
Niko Tyni   ntyni at debian.org
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