Options::packMatricesInRowMajor is inverted

[Tibor Klajnscek]

Describe the bug
Options::packMatricesInRowMajor is inverted. Setting it to true, passes in '-Zpc' which makes the compiler generate column major matrices.

To Reproduce
Inspect the source code:

        // HLSL matrices are translated into SPIR-V OpTypeMatrixs in a transposed manner,
        // See also https://antiagainst.github.io/post/hlsl-for-vulkan-matrices/
        if (options.packMatricesInRowMajor)
        {
            dxcArgStrings.push_back(L"-Zpc");
        }
        else
        {
            dxcArgStrings.push_back(L"-Zpr");
        }

Expected behavior
The values need to be inverted. Reading the comment it seems that this might've been intentionally inverted to fix SPIRV codegen, but my DX12/Vulkan/GLES engine works correctly for all three APIs when I pass in -Zpr and my matrices are row major in memory.

[Minmin Gong]

How do you use your matrix in shader? If you are writing mul(vector, matrix), a row major matrix on CPU need to be transposed and copy to cbuffer. If it's mul(matrix, vector), you don't need the transpose matries on CPU, but the shader is in lower efficiency.