narrow: drop safehasattr() checks for always-present repo.narrowmatch
I've added checks for repo.narrowmatch().always() in order to restore
some of the fast paths for non-narrow repos.
Differential Revision: https://phab.mercurial-scm.org/D2495
# name space package to host third party extensions
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)