GitLab

- Should be auto-gen'd when running prepare.  Will address with a
  separate patch if this turns out not to work.

- using uuids for now
- uuid is persistently associated with pmempool regardless of mercury
  address or storage location

- doesn't work yet, need to implement bake_bulk_read

- No way to find RIDs now, better store them somewhere if we want to
  test reading data out

- doesn't persist the correct number of bytes yet