tests/check-qlit: New, covering qobject/qlit.c

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20170825105913.4060-11-marcandre.lureau@redhat.com>
[Copyright notice correction squashed in, commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
