localrepo: use context manager for transaction in commit()
A side-effect is that the transaction is released a little earlier, so
the "commit message saved in ..." messages now comes after the
"rollback completed" message. That seems slightly better to me.
Differential Revision: https://phab.mercurial-scm.org/D5622
# name space package to host third party extensions
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)