d3dx10_43: Added D3DXCpuOptimizations stub sync

[Henri Verbeet]

On 25 October 2015 at 12:31, Andrey Gusev <andrey.goosev at gmail.com> wrote:
> Fixes https://bugs.winehq.org/show_bug.cgi?id=39501
>
Perhaps this is not any worse than what we have now, but presumably
D3DXCpuOptimizations() is supposed to set global dll state like an ops
table. I don't think forwarding will work very well once the
implementation actually does something.