Lintian 2.2.3

Time for the weekly Lintian release.

I wasn't sure if I was going to have time to commit another substantial bunch of work, but I got on a roll last night and found some more time today. The main infrastructure changes in this release are the beginnings of a rewrite of the handling of relationship fields and support for generating indices of source packages (needed for several other checks). The latter is sadly going to make Lintian a bit slower.

Among the more minor changes are a few new checks, some of them pedantic. One of particular note is a new info-level tag recommending +dfsg instead of .dfsg in version numbers. 1.0.dfsg1 > 1.0.1, which usually isn't what's desired, but 1.0 < 1.0+dfsg1 < 1.0.1. Thanks to Paul Wise for the bug report. I've been bitten by this one in the past.

Hopefully for the next release I'll get a chance to convert all of the check scripts over to using the new relation interface of Lintian::Collect, which will also mean more caching of data and less duplicate work for each package.

I'm working on the bits from the Lintian maintainers post. Raphael Geissert had some good ideas for additional information, so I need to find some more time to expand it.