Flock: Creating the hypervisor and the external-contact process

Flock: Creating the hypervisor and the external-contact process

This is the first part of rewriting Flock to C to significantly reduce
memory footprint of individual machines from 20+M in Python to (goal)
less than 1M. Now the process eats ~460k and I suspect that this won't
even be the consumption per machine in total as fork() is involved and
some parts of the memory will be heavily shared.