rebase: add a stateobj variable to rebaseruntime class
The stateobj variable is an object of state.cmdstate() and will be used in
upcoming patches to clean up the logic a bit and also use cbor format to write
data to rebasestate class.
Differential Revision: https://phab.mercurial-scm.org/D3874
# name space package to host third party extensions
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)