Merge pull request #1 from rdicosmo/master

Typos in the manpage (and replace sid with unstable)
Comigrate: fix --popcon option
Coinst-upgrades: fix popcon weighting for non-installable packages
Script to build a report using coinst-upgrades and comigrate
Comigrate: mark packaged removed from sid and not in testing has having no update
Comigrate/explain: compute the list of packages ready to migrate
Migration report: fix to the script (the date strings were wrong)
Fix handling of 'faux' packages
Fix printing of faux package source names
Added a migration report TODO list
Report: generate a page for packages ready to migrate as well
Migration report: remove old HTML files
Migration report: fix to constraint computation
Comigrate: improved performance when checking package migration with --inst

In this case, we focus on just the package and other relevant packages.
Comigrate: clearer explanation graph when a dependency cannot be satisfied
Revert incorrect optimization.

This reverts commit 7600485a5e9e501788c1c5377fad45f1d1d2ea53.
Util.date: fix off by one error
Report: hack to produce more hints (workaround to solver incompleteness)
Report: remain on coinst.irill.org
Comigrate: fix hint clustering when the source of a package changes