summary: run discovery only once for in/out against same repo Reuses the result of findcommonincoming if default and default-push are the same.

discovery: resurrect findoutgoing as findcommonoutgoing for extension hooks discovery.findoutgoing used to be a useful hook for extensions like hgsubversion. This patch reintroduces this version of findcommonincoming which is meant to be used when computing outgoing changesets.

transplant: remove unneeded loop over repo in revset