Port maps for specifying links between switches.
Bumped version of floodlight that I'm using so that can reuse floodlight switch listener instead of my own custom switch listener.  Breaks pronghorn build, which still points at my custom listener.  Fixing.
Updated core libraries to switch over to using IOFSwitchListener instead of using my custom SwitchStatusHandler interface.  Next: should update experiments.
Updated all tests to stop using rest shim and to use correct switchstatushandler.  Need to reimplement some of the tests using new shim.