hgext/__init__.py

setup: filter out devel-warn messages from system hg

If we're going to use the user's installed and configured hg command
(which we do since 8b20338b989e), we should prevent devel-warn messages
from interfering with locating it.

from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)