progress: handle days, weeks and years using hg clone svn://anonsvn.kde.org/home/kde/trunk kde ... with progress yields 3008/1210830 1314h56m, which is unusable. Add code to switch to days at 30 hours, to weeks at 15 days, and to years at 55 weeks. A day has 24 hours, a week has 7 days, and a year has 52 weeks. Months are intentionally omitted because they do not have a fixed length. The Use of 52 weeks is a known and understandable estimate for a year. It might make sense to spell our year to alert people when progress is impractical, but...

rename util.unlink to unlinkpath

merge with stable

subrepo: do not report known files inside repositories as unknown

hgrc.5: mention that web.cacerts are run through util.expandpath

url: expand path for web.cacerts

commands: clarify which aliases "hg help -v" show (issue2572)