[Standards-JIG] Privacy List Fall-Through

[Ian Paterson]

In the interests of minimising the impact on RFC 3921bis I am no longer
pursuing the privacy2 proto-JEP "Communication Blocking Extensions":

http://www.clientside.co.uk/jeps/jep-privacy2/jep-privacy2.html

In favour of a new (similar) Anti-SPIM proto-JEP "Privacy List
Fall-Through" (or "fallthru" for short):

http://www.clientside.co.uk/jeps/jep-fall-through/jep-fall-through.html

As usual, all feedback and flames are very welcome.

- Ian