TASK25: Bacnet stack driver to use uIP and RFM12B
https://rally1.rallydev.com/slm/detail/tk/16904857147

- Initial import of uIP and Jeelib(RFM12B) libraries
- Modifications to BacnetNode libarary headers to better handle "C" code
- Added configurations to build bacnet-stack with rfm12b driver
- Added application to make use of new driver (ArduinoBacnetAppRfm12b)
TASK25: Bacnet stack driver to use uIP and RFM12B
https://rally1.rallydev.com/slm/detail/tk/16904857147

- Added broadcast UDP and adapted configurations (uip-conf.h)
- Support to subnet broadcasts (uip_ipaddr_test_addr in uip.c)
- Support for UDP reply to sender when the open connection was
configured for any ip (0.0.0.0) and any port (port 0).
- Added slipdev driver function to define custom put and poll callbacks.
Necessary to interface with rfm12b radio.
COMPLETED TASK25: Bacnet stack driver to use uIP and RFM12B
https://rally1.rallydev.com/slm/detail/tk/16904857147

Arduino device responds correctly to bacwi -1 command issued from remote
client (raspberry pi)