Updated uses of the wishbone_pkg to use Tom's naming conventions.
Added Manifests for the new files.

  manual -- configure bus_end directly
  layout -- configure bus_end from nested bus layout
... and fix a bug where the dpram size was incorrect

  record count is 16 bit
  index aliased decription (to avoid overflow)

Added feature:
  make it easy to relocate a device to a new address

Checks added:
  confirm address ranges to not overlap during synthesis
  check wbd_begin/end addresses for compatability with the crossbar

Decode the SDWB blocks to create bus addresses in the sdwb_crossbar.
I still need to add assertions to confirm the user didn't give bad inputs.