Re: incorrect super block w recent changes

[Martin Husemann <martin%duskware.de@localhost>]

I changed the test so it recognices the CGSIZE()-is-off-by-one case especially
and prints a warning pointing to a web page documenting the issue.
In this case it will allow mounting the file system now.

In all other inconsistent cases, mounting will still fail (but print out
information with a few more details).

Martin