Updated glslang, SPIRV-Cross, and SPIRV-Tools. #57

Job	Run time
Linux (Shared, -DMSL_SHARED=ON)	11m 11s
Mac (Shared, -DMSL_SHARED=ON)	10m 13s
Linux (Static, -DMSL_SHARED=OFF)	11m 8s
Windows (Win32, 32, Shared, -DMSL_SHARED=ON)	13m 27s
Windows (x64, 64, Shared, -DMSL_SHARED=ON)	13m 42s
Windows (Win32, 32, Static, -DMSL_SHARED=OFF)	13m 52s
Windows (x64, 64, Static, -DMSL_SHARED=OFF)	13m 26s
	1h 26m 59s

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