fingerprints: BGPUpdate, BGPandOSPFSimple -- TODO when, why?
WirelessMacBase: bugfixes

- handleCommand() should handle only commands from upper layer
- handleLowerMsg() should handle only packets from lower layer
- throws error on unhandled messages
ChannelControl bugfix: LIGHT_SPEED vs SPEED_OF_LIGHT
fingerprints changed after fixed LIGHT_SPEED to SPEED_OF_LIGHT in ChannelControl
IChannelControl: added getPropagationSpeed() function - propagation speed of signals
Radio: fixes for setRadioState(): signal and notification sending fixes, optimisation
fixes after renamed AbstractRadio to Radio