thin3d: Use dynamic index/vertex buffers.
thin3d: Simplify d3d9 debug dll loading.
thin3d: Avoid dynamic texturing locking.

Seems like it requires checking caps, and these textures are probably
not dynamic anyway.
Check for the EXT_gpu_shader4 extension.
Merge pull request #235 from unknownbrackets/glsl-int

Check for the EXT_gpu_shader4 extension
Merge https://github.com/hrydgard/native