This reverts commit dc1012140e
dc1012140e
Rather than having a function that needs to be called from ShInitialize to initialize some global costants, convert them to use static initializers.
Now that the HLSL source files are part of the `glslang` target (#2271), it makes sense for these to sit in the `glslang` directory. Changed the case of the directory from `hlsl` to `HLSL` to better match the sibling directories.