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.
Add GL implementation limits to hwdetect.
Make the in-game manual support multiple text files.
Remove unnecessary instruction on how to close the manual window.
Make guitextobject.caption return the original value without stripping
formatting tags.
Remove unused non-VFS support from config system.
Support writing config files back to their original path.
Remove unnecessary user profile directory; use normal config directory.
This was SVN commit r8925.
