add Sort nearly sorted array.
add std::memory_order_relaxed example.
renamed to MemoryOrderRelaxed.cc
add MemoryOrderReleaseandConsume example.
add MemoryOrderReleaseandAcquire example.
add MemoryorderAcqRel example.
add MemoryOrderSeqCst example.
add MemoryOrderSeqCstFatal example.