Merge pull request #65 from mehlis/master

Add msg_try_receive
removed redefined ENABLE_DEBUG
fixed printf patterns
remove static flag, it's not static
native cc1100x_ng network via tap

not properly passing received data to transceiver atm
native cc1100 write commands
moved code around
wip
pkt reception working (probably)
reception working as intended
enable error messages in tap
Generalized, improved and renamed tap setup script
add native README, explicate startup fail msg
osx support for tap
start tap indeces at 0 in tapsetup
osx tap setup script
fix warnings
initial ccn commit
add ccnx code
add cnn and ccnd in Makefiles