fixed printf formatter
redefining default stack sizes dependent on the use of printf
allow external modules to be added to a project
added missing include to cc110x_ng
some buffer adjustments
Revert "removed redefined ENABLE_DEBUG"

This reverts commit 69c526f44dedffe1118ba90ea418c8cb342cf46b.

Instead of removing ENABLE_DEBUG, define it as zero and replacing the
ifdef preprocessor commands by a simple #if
fixed some includes
add typedefs to socket.h to improve POSIX compliance
Merge pull request #76 from benpicco/posix_compat

add typedefs to socket.h to improve POSIX compatibility
Merge pull request #75 from benpicco/external_modules

Allow external modules to be added to a RIOT project
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