client/server protocol changes

[Dave Ahn <ahn@vec.wfubmc.edu>]

I need to update the client/server protocol to support the new LTD stats.
I think that the best way to do this without breaking compatibility is to
introduce a new feature.  That way, the LTD c->s request and s->c stats
packets will only be sent if both the server and the client support the
feature.  I plan to update TT/lite for the client side support.

Comments?
-- 
Dave Ahn <ahn@vec.wfubmc.edu>        |  "When you were born, you cried and the
                                     |  world rejoiced.  Try to live your life
Virtual Endoscopy Center             |  so that when you die, you will rejoice
Wake Forest Univ. School of Medicine |  and the world will cry."  -1/2 jj^2