np-serv.py started

I'm setting up a client-server configuration for doing netperf experiments.
The client passes connection information to the server. The server replies
with the core on the receiver that netperf should bind to. The client starts
netperf. TODO:

 (1) A rudimentary connection -> cpu table
 (2) Actual cpu mapping (integrate procmap.py into np-serv.py)
 (3) Server should handle multiple clients.
Merge branch 'master' of https://github.com/cjpatton/cache-affinity