Remove SSE detection duplication in Colors and ModelRenderer
- Rename macros to be more explicit
- Move detection code to a separate file
- Remove a lot of checks in ARB mode (ModelDef.cpp would check for sse multiple times per frame)
- Make explicit the SSE2 dependency for Windows
Comments by: @vladislavbelov @wraitii @OptimusShepard
Differential Revision: https://code.wildfiregames.com/D3212