From Hannes Gredler:

From Hannes Gredler:

- unify the IS-IS CLV space
  IS-IS uses a unified CLV space across all Level and PDU Types
  there is no need to define PDU- and Level- Specific CLV
  Types;

- clean up Authentication CLV
  TLV #10 is the official supported TLV for carrying authentication
  information- todays code displays TLV #10 as non-standard which
  is wrong;
  also the notion of "Domain" "Authentication" and "Link" password
  has disappeared from contemporary routing SW;

- add IP Authentication CLV dissector
  this CLV is depreciated - however it is using different semantics
  than TLV #10 so we need a dedicated dissector;

- add Checksum CLV dissector
  add support for RFC 3358 Checksum CLVs
  majority of code re-used from the LSP checksum verification
  dissector.

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@9204 f5534014-38df-0310-8fa8-9805f1628bb7