jfstools 1.1.9: Add support for Dragonfly BSD.

[Tomaž Borštnar]

So where do we test this thing? :)

New in 1.1.9 - 2005-10-04
* Add support for Dragonfly BSD.  I/O to block devices must be done through
  aligned buffers.  Change to use stream I/O to avoid problems.