Add  to temporary includes path to find src/video/windx5/directx.h if we build SDL in a different directory
Add  to temporary includes path to find src/video/windx5/directx.h if we build SDL in a different directory


git-svn-id: 75429ccc2030f235ccf16e6b9b7f8e83d5edd22e@1203 c70aab31-4412-0410-b14c-859654838e24

albertz/sdl,albertz/sdl,albertz/sdl,albertz/sdl