win32text: drop associated dirstate cache information on revert
Otherwise the could get size from one version of the file while the on-disk
version is still clean but with another size.
This fix the previously introduced error.
Differential Revision: https://phab.mercurial-scm.org/D11792
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)