Let materials specify shader uniform values.
Use interned strings for shader uniform/attribute names.
Remove confusing float* cast operator on CVector4D.
Simplify and clean up CVector4D.
Remove non-supported 'old' lighting model.
This was SVN commit r11453.
Add shadow filtering (PCF) option.
Fix ugly shadow saturation in old lighting mode.
Fix fancy water shader.
Fix camera matrix computation.
Support scissoring of camera frustum.
Optimise vertex skinning.
Inline various matrix functions.
Support filtering of the list of submitted models before a rendering
pass, for more precise culling.
Optimise water renderer (fixes#721, based on patch by ortalo).
Use scissoring when generating reflection/refraction textures.
Skip reflection/refraction texture generation when no water is visible.
Render alpha-blended objects differently (fixes#434).
Reduce shadow swimming effects.
This was SVN commit r9814.
-Auras now take additional parameters from XML, containing a tag for r,
g, b, and a. No line thickness parameter yet.
-For territories, added function to frustum for determining if line
segment passes through the frustum.
This was SVN commit r4242.
