hgext3rd/__init__.py

test-check-code: do not use xargs

We have too many files, and passing them via arguments could cause strange
errors on some platforms [1]. Since check-code.py can now take "-" and read
file names from stdin, use it instead of xargs to avoid the argv size limit.

[1]: https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-April/096346.html

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