Added standard way to query CCA status on CC2420 transceiver (squashed)
Completed CC2420 constants documentation (DOxygen)
Fixed error caused by non-inclusion of cc2420_txrx() prototype
Fixed implementation of channel_clear() function
Change year of file copyright
Fix for WSN430 1.4 driver
Merge pull request #915 from rousselk/radio-cca

Add a standard way to query CCA status on CC2420 transceiver.