Cross Reference: /prebuilts/ndk/r13/sources/cxx-stl/llvm-libc++/test/std/atomics/atomics.fences

`Name`	`Date`	`Size`
Up to higher level directory
`atomic_signal_fence.pass.cpp`	06-Dec-2017	`548`
`atomic_thread_fence.pass.cpp`	06-Dec-2017	`548`