wined3d: Allow vertex shaders to generate GLSL shaders

[Ivan Gyurdiev]

> +        /* Create the uniforms (aka constants) */
> +        shader_addline(&buffer, "uniform vec4 C[%u];\n", This->baseShader.limits.constant_float);
> +        /* TODO - Add varyings, attributes, etc. */
> +
Shouldn't this go into the "generate_glsl_declarations" thing into 
baseshader?
Things previously merged into baseshader should stay that way, imho...