Continued the shifting of the consistency tests code to the new relax design started at r4583.
This fixes some of what was pointed out by Edward d'Auvergne in a post at:
https://mail.gna.org/public/relax-devel/2008-01/msg00029.html (Message-id:
<7f080ed10801100327y7d139901sa1397f8f6b366315@...>)