include: Improve include directive in d3dtypes.h.

[Henri Verbeet]

On 22 July 2016 at 15:31, Andrey Gusev <andrey.goosev at gmail.com> wrote:
> -#include <d3dvec.inl>
> +#include "d3dvec.inl"
Is that really an improvement? I'd argue these are system headers and
angle brackets are correct. Of course in that case there are a couple
of places where we'd want to change things in the other direction.
Whether that's worth the trouble may be a different question.