[PATCH] d3dcompiler: Implement D3DCompile2() using vkd3d_shader_compile().

[Matteo Bruni]

Signed-off-by: Matteo Bruni <mbruni at codeweavers.com>
---
I really don't like linking to wined3d for the vkd3d-shader
integration.  Unfortunately at this point it seems that the
alternatives are even worse (e.g. I really don't want to have each
d3dcompiler_xx.dll be about 6 MB large, replicating most of vkd3d 13
times).

I wrote a few patches that improve things to some degree but I'm not
sure we'll want to get rid of the wined3d import here even afterwards,
so let's go with this I guess...