significant improvements include telling you where it thinks the file system
starts when scanning for superblocks... support to compile (untested) under
Solaris, support for reading from raw devices, support for non-mmap'able
files (which also means you can use it on >2gig file systems under x86)...
arbitrary file system start possitions (you can use da0c to access filesystems
that don't begin a block 0), print out and validity checking of arbitrary
superblocks (no longer just the primary superblock)...
and possibly more...
60ef608695