init: use `get_clone_path` when suitable
`hg init` has this weird feature were you can refer to `[paths]` entry select the path to initialize. We move that code to the new APIs.
Differential Revision: https://phab.mercurial-scm.org/D10418
# name space package to host third party extensions
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)