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on automake platforms, too.

directory layout mess.

issues that were introduced with the Direct3D changes.

cannot used DirectX 10 because my video card only supports DX9, and there
is no compatibility layer. DX11 has feature levels for older hardware so
it would work with a DX9 card, but it's not available for WinXP.

that are not explicitly real, even with namespace mistakes.

reuse the linear operations in quaternions. Also mark some constructors
explicit to better spot coding errors.

According to David Turner, “it should be the only thing that NDK users
should be testing again.”