d3d9 win32 build

[wmjb]

currently working on a d3d9 / win32 build of butterscotch.. have most of it working just needs some tweaking to get everything looking correct.

does not use glfw

platform=d3d9

https://github.com/wmjb/butterscotch

[wmjb]

this build was done to make use of the surface 1/2 arm32 devices running windows 8.1/10 as they only expose a d3d9 driver.