cpu/stm32f0: fixed low-level timer driver
unittests: make test macros save for strict aliasing
Merge pull request #1973 from authmillenon/test-macros

embunit: make test macros save for strict aliasing
c++: sys: add extern C to header files
Merge pull request #1793 from BytesGalore/extern_C_in_headers_sys

sys: add extern "C" to headers
nativenet: add missing include
Merge pull request #1977 from authmillenon/nativenet-include

nativenet: add missing include
Merge pull request #1956 from haukepetersen/fix_stm32f0_timer

cpu/stm32f0: fixed low-level timer driver
licenses: fix miss-spelled & missing boiler plates
Merge pull request #1974 from OlegHahm/cleanup_licenses

licenses: fix miss-spelled & missing boiler plates
embunit: fix macros