update copyright statement.

fakeroot: tweak example sudoers config further.

%.testoutput targets: call env inside $(fakeroot) to keep it from
 dropping environment variables if it is sudo.

smoke-testing-state/var/lib/puppet, smoke-testing-state/var/run: merge
targets.

clean: chown smoke-testing-state recursively before attempting to
delete directories in smoke-testing-state/var.