match: drop support for empty pattern list in patternmatcher
Since the caller now deals with empty pattern lists, we can drop that
support in the patternmatcher. It now gets the more logical behavior
of matching nothing when no patterns are given (although there is no
in-core caller that will pass no patterns).
# name space package to host third party extensions
from __future__ import absolute_import
import pkgutil
__path__ = pkgutil.extend_path(__path__, __name__)