Beginning transition to protocol version 1

SerialConnection.java:
-SerialConnection buffers each incomming message before handing off to Coordinator
-increased serial transfer speed

Driver.java:
-some methods now marked final.  Eventually drivers will pass a handle to themselves when using coordinator methods.

Coordinator.java:
-waits for local arduino link to become ready before continuing setup process
-sends broadcast query to get a list of all remote modules, waits 6 seconds for responses
-processMessage() records responses to broadcast query, adds responding modules to list
-removed code that added all initialized drivers to remote module list.