I have bumped the type used for disk blocks to a 64 bit value. This is
in preperation for being able to address > 1T devices. This doesn't
change anything for the on-disk structures.

However, if you find anything wrong with filesystems after this
change, please file a PR.

- Frank

-- 
Frank van der Linden                                    fvdl@wasabisystems.com
==============================================================================
Quality NetBSD Development, Support & Service.   http://www.wasabisystems.com/