RFC-Editor Note for nonce document

[Allison Mankin <mankin@psg.com>]

Here's an action item left from the Feb 6 meeting.  It is the
RFC Editor note for draft-ietf-tsvwg-tcp-nonce-04.txt going to
Experimental.  With this RFC-Editor note, the document can be
announced as approved.

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RFC-Editor, please add the following text after the Abstract:

   Statement of Intent:

      This specification contains an optional addition to Explicit
      Congestion Notification (RFC 3168) improving its robustness
      against malicious or accidental concealment of marked packets.
      It has not been deployed widely.  One goal of publication as an
      as an Experimental RFC is to be prudent, and encourage use and
      deployment prior to publication in the standards track. Another
      consideration is to give time for firewall developers to accept
      and recognize the pattern presented by the nonce.  It is
      the intent of the Transport Area to re-submit this specification
      as an IETF Proposed Standard in future after more experience has
      been gained.

RFC-Editor, please also expand the acronyms in the abstract on first
appearance:

  Explicit Congestion Notification (ECN)
  ECN-Capable Transport (ECT)