This commit contains an ipc library implemented by dpdk rte_ring and
sysctl tool ported from FreeBSD.
With this commit we can get and set FreeBSD kernel state in runtime.
Because pkg-config(version before 0.28) reordered -Wl,--whole-archive -Wl,--no-whole-archive not to surround the dpdk libraries, so we remove pkg-config and do it ourselves.