[ODE] networking demo

[Anselm Hook]

Hi all,

I'm playing around with a little networking demo that is gradually getting
better.  Now it networks all the state of the little cars including the
user events - this makes it fairly smooth.  Also it uses udp - although I
still have a defect in that area which will prevent more than 2
connections at a time (you can turn off udp though and have an arbitrary
number of clients).

http://hook.org/anselm/test_buggy.cpp

Next I have to do compression, blending, distance attenuation and a few
things like that...  In any case some of you may find it interesting.

 - a