pkg/oonf_api: fix conflicting types on msba2
unittests: core: add test_bitarithm_[ml]sb_all
Add test_ipc_pingpong
Add bitarithm measuring
core: faster bitarithm_msb
Merge pull request #1210 from benpicco/fix_oonf_msba2

pkg/oonf_api: fix conflicting types on msba2
Merge pull request #975 from Kijewski/issue-974

core: change in bitarithm implementation