hgext/__init__.py

progress: check what type of progress bar to use only once per topic

This seems to have sped up `hg perfprogress` from 1.78 s to 1.41 s.

Differential Revision: https://phab.mercurial-scm.org/D5530

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