rust-hg-path: implement `Display` for `HgPath` and `HgPathBuf`
This is useful when debugging, to get a human readable output instead of an
array of `u8`.
Differential Revision: https://phab.mercurial-scm.org/D7523
from __future__ import absolute_importimport pkgutil__path__ = pkgutil.extend_path(__path__, __name__)