make: force traversal into PKG's, same as normal modules
cpu: Initial import of stm32f3
board: Initial import of stm32f3discovery
cpu - cortex-m4_common: fixes to thread_arch.c
examples/tests: blacklisted stm32f3discovery
native: cpu: Add documentatiton for CPUID_ID_LEN
Merge pull request #1520 from authmillenon/cpu-id-doc

native: cpu: Add documentatiton for CPUID_ID_LEN
Merge pull request #1456 from haukepetersen/board_stm32f3discovery

board/cpu: Added support for the stm32f3discovery board and stm32f3 cpu
pkg: add USEPKG module "libfixmath"

This PR adds the USEPKG module "libfixmath".
It integrates https://code.google.com/p/libfixmath/ into RIOT, cmp. #1457.
Merge pull request #1460 from Kijewski/issue-1457

pkg: add USEPKG module "libfixmath"
sixlowpan: decrement processing semaphore when discarding
sixlowpan: some additional debugging
Merge pull request #1523 from OlegHahm/sixlowpan_minor

sixlowpan: minor cleanups and debugging