anytransceiver pseudomodule with native and msba2 support
s/TRANSCEIVER_ANY/TRANSCEIVER_DEFAULT/g

addresses https://github.com/RIOT-OS/RIOT/pull/609#issuecomment-34163388
chronos anytransceiver
msb-430h, wsn430-v1, cc2420, examples/default
add TRANSCEIVER_CC1100 default
add pttu anytransceiver comment
fix unneeded transceiver building

Compare: https://github.com/RIOT-OS/RIOT/issues/672
wip