Fix another false positive for gfdl variant

Fix another false positive when front-cover text is abbreviated front-cover.

Signed-off-by: Niels Thykier <niels@thykier.net>
Fix a new gfdl false positive

Fix a false positive in parsewiki

Signed-off-by: Niels Thykier <niels@thykier.net>
Be not greedy for checking gfdl invariants

Fix a lot of invariants problem for instance in shorewall-doc

Signed-off-by: Niels Thykier <niels@thykier.net>