Real Time Paparazzi 0.1

Based on master
ChibiOS/RT 2.6.2 as a submodule
Compiles and works (send telemetry, reads GPS data, as described in #554 ) -> use hexarotor_lia_rt.xml

I am pushing this request so developers can look at the new files and evaluate them. Work is still in progress.

Hottest issues:
1) Fix linker script properly so it can be used with Luftboot (offset 8kb)
2) Fix project building path so object files are generated into var/airframe_name directory
3) Fix flash erase/lock during JTAG upload