SPIR-V headers (The Khronos Group, MIT license) copied from the Vulkan SDK installed at E:/VulkanSDK
(Include/spirv/unified1, SPIR-V 1.6 revision 1):

  include/spirv/unified1/spirv.hpp11    the opcode and enum tables of SecondSonPC's SPIR-V builder (src/runtime/gpu/gcn)
  include/spirv/unified1/GLSL.std.450.h the GLSL.std.450 extended instruction numbers

SecondSonPC's own pinned third-party code (docs/AUDIT.md, Phase 6), not part of shadPS4.
