Matt Mackall <mpm@selenic.com> [Sun, 12 Oct 2008 15:21:08 -0500] rev 7090
diff: pass contexts to status
Allow status() to take contexts as well as nodes. This lets us avoid
unpacking manifests multiple times and intelligently unpack manifests
in revision order. Also, we can avoid unpacking manifests at all when
there are no changes in the working directory.