Merge pull request #1505 from haukepetersen/add_stm32f0_adc

cpu/board: added ADC driver for stm32f0discovery
Merge pull request #1517 from cgundogan/remove_tabs_sys

converting tabs to spaces in sys (#1439)
Merge pull request #1509 from haukepetersen/fix_cortexmcommon_cppcheck

cpu/cortex-mX_common: fixed type issues in thread_arch
Merge pull request #1516 from cgundogan/remove_tabs_drivers

converting tabs to spaces in drivers (#1439)
Implement CPU id getter for native
Merge pull request #1515 from cgundogan/remove_tabs_dist

converting tabs to spaces in dist (#1439)
Merge pull request #1518 from cgundogan/remove_tabs_tests

converting tabs to spaces in tests (#1439)
Merge pull request #1329 from LudwigOrtmann/riot_license

RIOT default license header change
Merge pull request #854 from authmillenon/cpu-id

drivers/cpu: add function to get CPU id/serial number
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.
crypto: get rid of compiler warnings
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
make: provide BOARD, MCU and CPU name as a string

This PR adds the defined `RIOT_BOARD`, `RIOT_CPU` and `RIOT_MCU`.
They each are defined as `BOARD_${BOARD}`, `CPU_${CPU}`, and
`MCU_${CPU}`, resp.

`BOARD_${BOARD}` is defined as the string `"${BOARD}"`, but not in upper
case. Same for the other two.
Merge pull request #1524 from Kijewski/make-board-name-string

make: provide BOARD, MCU and CPU name as a string