rename
	renamed:    include/rte_atomic.h -> include/sxi_atomic.h
	renamed:    include/x86_64/arch/rte_atomic.h -> include/x86_64/arch/sxi_atomic.h
	renamed:    utils/rte_ring.c -> utils/sxi_ring.c
	renamed:    utils/rte_ring.h -> utils/sxi_ring.h