Initial work on new arduino support via Google Protocol Buffers.
SITEWHERE-19 #comment Swapping to GPB implementation.
Updated protos to use different (lower memory) approach due to crashing
problems.
SITEWHERE-19
Round-trip support working.
SITEWHERE-19
Change back to string for originator since invocation does not have a
UUID.
Added support for reporting device location.
SITEWHERE-19
Updated Arduino libs to work with latest proto.
SITEWHERE-19
Committing changes for 0.9.4. Implementation is still not working due to
memory constraints on the Uno. Will look at it more with 0.9.5..