lintian 1.23.29

Post-etch flood, part three. I finally got around to fixing the debconf dependency analysis code and adding the checks for error templates, and then I fixed the --color implementation so that it really worked the way that I hashed out in the bug report.

145 lines of changes in this version. I need to upload new versions more often (although in this case it's because we were waiting on the etch freeze).

lintian is still over 100 bugs (although as always nearly all of them are wishlist). There are a few more easy ones that I may tackle in a bit, but I need to get caught up with the rest of my post-etch uploads first.