Link Contract Pattern

[Michael Schwartz <mike@gluu.org>]

Drummond,

Per our converstation, it would be convenient to be able to say anyone 
assigned to this link contract has the right to send messages, which could 
be done with variables:

   ($1)
   ($1)$msg
   ($1)/$/(=abc!1$do/$())

Can you update the Link Contract Pattern with this change?

Also, an example of $not$get would be nice. I think this is needed 
immediately. For example: share my /pictures folder, but don't share 
pictures042.jpg and pictures043.jpg

Thx!!!

Mike