Erik Zielke <ez@aragost.com> [Mon, 31 Jan 2011 13:40:05 +0100] rev 13324
subrepo: make update -C clean the working directory for git subrepos
This makes 'hg update --clean' behave the same way for all three kinds
of subrepositories [hg, svn, git]. Before git subrepos did not take
the clean parameter into account, but just updated to the given
revision and merged uncommitted changes into that.