Paul Molodowitch <pm@stanfordalumni.org> [Wed, 25 May 2011 08:38:58 -0700] rev 14440
subrepo: bare git repos considered dirty
Currently, if there is a bare git subrepo, but it is at the "right"
revision, calling dirty() will error because diff-index does not work
on bare repos. This patch makes it so bare subrepos are always
considered dirty.