Add ability to supplant main() when core-firmware is used as a lib
Initial Spark Core firmware conversion working.
Adding BLE library into main src and inc folders for the sake of time. Need to configure make to use submodule of this library.
Enabling BLE files in build.mk in /src
Moving BLE files out of src and inc to do it right the first time.
Preparing for BLE test. Code complete, but not working yet. Need to debug.