hgext/__init__.py

hgweb: put response headers back into str for Python 3

This fixes a lot of hanging tests on Python 3, because
"Content-Length" was getting sent as "b'Content-Length'" (yes, really)
and then clients would expect a close-is-end body instead of counting
off a certain number of bytes.

Differential Revision: https://phab.mercurial-scm.org/D3248

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