[ Yves-Alexis Perez ] * debian/rules: - use hardening support from dh 9 and dpkg-dev 1.16.1. * debian/control: - update debhelper build-dep to 8.9.4 for hardening support. - add build-dep on dpkg-dev 1.16.1 for hardening support. - drop build-dep on hardening-includes. * debian/compat bumped to 9.