py3: convert _origdoc to sysstr to match __doc__
It's currently stored as bytes by core, so we need to convert it to
match Python's expected type for __doc__. This patch can be dropped if
D6623 gets accepted.
# name space package to host third party extensions
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)