templater: use pycompat.sysbytes to bytes-ify some __name__ attrs
Spotted by yuya in review of e87e62b7fc0b.
Differential Revision: https://phab.mercurial-scm.org/D1145
# name space package to host third party extensionsfrom __future__ import absolute_importimport pkgutil__path__ = pkgutil.extend_path(__path__, __name__)