run-tests: allow bisecting a different repo
Add `--bisect-repo` flag which accepts a different repo to bisect.
3rd party extensions may reuse `run-tests.py` from core to run tests. Test
failure could be caused by either a core hg change or the 3rd party
extension code itself. Having a way to specify which repo to bisect is
useful.
Differential Revision: https://phab.mercurial-scm.org/D578
# name space package to host third party extensions
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)