board: Initial import of stm32f0discovery
cpu: Initial import of cortex-m0_common
cpu: Initial import of stm32f0
tests/examples: added stm32f0discovery to ignorelists
Merge pull request #1291 from haukepetersen/board_stm32f0discovery

Board stm32f0discovery
board: Initial import of stm32f4discovery
cpu: Initial import of stm32f4
cpu: Initial import of cortex-m4_common
test/examples: blacklisted stm32f4discovery
test: blacklisted test_coap
cpu cortex-common: fixed printf in thread_arch.c
cpu - stm32f4: changed cpu header file
cpu stm32f4 - minor fixes to io_arch and Makefile
board: some fixes + added debug script
cpu - stm32f4: added reboot arch and style fix