Delegates now receive a TexParams* instead of float *coords. This gives texture nodes access to dxt, dyt, cfra as well as coords. This fixes the time node and allows nice sampling to be implemented.
Cleanup
- for portablity we can keep the old ugly defines for retrieving
active object, cfra and so on. But, they will use 'scene' not
G.scene.
- fixed code that uses those defines.
- some unused variables/functions removed
