Start to add support for DirectX 8 vertex shaders, constants and
registers are now correctly assigned and loaded allowing support for
most basic d3d8 shaders.
any objects referenced by the internal stateblock are released when
the stateblock is released (we don't reference count while a
stateblock is recording, so recorded stateblocks have no references to
clean up).
glDesciption member.
Removed Level and Target from LoadTexture, and reduced the dependency
on surface->device.
Fixed a couple of compiler warnings in d3d9.
Oliver Stieber