-- v2: vkd3d-shader/hlsl: Write SM4 dcl_thread_group instructions. vkd3d-shader/hlsl: Parse the numthreads attribute. vkd3d-shader/hlsl: Parse function attributes. vkd3d-shader/hlsl: Use hlsl_new_synthetic_var() in hlsl_new_func_decl(). vkd3d-shader/hlsl: Add a hlsl_fixme() for compute shader thread counts. tests: Add some tests for HLSL attribute syntax.