follow-up IANA-RESERVED IRR

RESERVED or ALLOCATED

and having that publishd by IANA, we reduce the potential of
mistakes affecting "real users".

  Actually, this was part of the original RAdb.
  All the RESERVED space was mapped to AS-0.
  This was not considered useful and it was
  dropped. Cisco (and perhaps others), co-opted
  AS-0 for their own nefarious purposes.