revset: make match function follow given subset if specified (API) This should be sensible default since mfunc(subset) is roughly equivalent to 'subset & mfunc'. The order argument is still there so we can specify 'anyorder' if the order doesn't really matter.

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