Add Direct3D 9 renderer

[Echelon9]

Create an alternative Direct3D 9 renderer alongside the existing Direct3D 8 (August 2007 SDK) renderer.

TODO: Separate in small PRs:

• Use blushogun96's existing work-in-progress Direct3D 9 patch.
• Abstract the key renderer interfaces, methods and structures.
• Provide clean method of switching out between Direct3D 8/9 renderers.
• Update project files to refer to standard install location of the DirectX libraries. DirectX SDK (June 2010) was the last standalone release; now included in the Windows SDK.
• Enable vertex shaders on Direct3D 9 renderer cf EmuIDirect3DDevice8_CreateVertexShader()
• Address tweaks and compatibility improvements.
• Use DirectX 'Developer Runtime' to fix newly introduced ERROR or CORRUPTION level messages..

Note: Windows XP does not support DirectX 10 and above.

[Echelon9]

Helpful reference materials

http://msdn.microsoft.com/en-us/library/windows/desktop/bb204851(v=vs.85).aspx
https://user.xmission.com/~legalize/book/dx9-core.html

wasn't the source code leaked for the xbox?
(read it on reddit)