board/mbed_lpc1768: cleaned up Makefile.include
dist: default cppcheck to ignore unusedStructMember
lint: remove unusedStructMember supressions
Merge pull request #2040 from haukepetersen/fix_mbed_makefile

board/mbed_lpc1768: cleaned up Makefile.include
Merge pull request #2038 from N8Fear/cppcheck

cppcheck: suppress unusedStructMembers by default
native: add random syscalls
native: add random peripheral implementation
tests/periph_random: fix warnings, conventions