Preparing the current radio implementation for integration with the new one.

Added setRadioMode and setRadioChannel to RadioBase.
Removed some unused function declarations.
Renamed IRadio to OldIRadio
Renamed IRadioFrame to OldIRadioFrame.
Renamed enum RadioReceptionState to ReceptionState and removed RADIO_ prefix.
Renamed enum RadioTransmissionState to TransmissionState and removed RADIO_ prefix.
Renamed signal radioReceptionStateChanged to receptionStateChanged.
Renamed signal radioTransmissionStateChanged to transmissionStateChanged.
Extended radio interface with a number of new concepts.
Fixed all target in the top level makefile.
Added new scalable (in terms of performance and level of deatil) radio implementation.
Extended build process to compile CUDA code.

This is not optional yet and you will need a working CUDA sdk and NVidida driver.
Added module tests for the new scalable radio implementation.
Extended mobility interface with a function that provides future positions.
Added a direct test for the new scalable radio implementation.
Added a new scaling test of radio implementations.