scons option to build with g++: gcc=1
Mbox and MboxProducer classes
add minimal Mboxes class
Mboxes, Topology, TopologyManager classes, mostly skeletal
add zer0mq3 and msgpack libraries
Fix: Serdes doesn't actually work. Although "pos" gets incremented, non of the "memcpy" calls use it to offset the pointer.
Merged with mtravis
Unit tests compile AND run with no errors.