1 - Unit tests
2 - REST API
3 - Handle multicast/broadcast

Use Java properties (either via config file or command line) for per-module specific configuration files. Note: This obsoletes previous command line configuration properties apart from -cf (configuration file).

New TopologyManager.  Previous TopologyImpl would simply do link discovery.  Cosmetic refactoring (renaming etc.) would be done separately.

Create NullCounterStore and NullPktInProcessingTime modules. These are used to create a minimal configuration for performance testing or to turn them off.

Fixed JUnit tests.

Conflicts:

	src/main/java/net/floodlightcontroller/util/TimedCache.java