dispatch: use the new API to resolve --repository
An even weirder feature of Mercurial is the ability to use `[paths]` alias as
value of `--repository`. The weird feature now use the new APIs.
Differential Revision: https://phab.mercurial-scm.org/D10424
from __future__ import absolute_importimport pkgutil__path__ = pkgutil.extend_path(__path__, __name__)