tests: update now that merge.graft() doesn't set two equal parents This is a consequence of https://phab.mercurial-scm.org/D7549. CORE-TEST-OUTPUT-UPDATE: 32d11a23c9cf

# name space package to host third party extensions
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)