Animate props much more sensibly.
Move ammo code out of CUnit.
Move animation logic out of CModel.
Launch projectiles from the correct location.
Use entity's speeds and sounds in actor viewer.
Add -nosound option to disable audio, and allow audio by default in
Atlas.
Remove some obsolete options.
This was SVN commit r7609.
Add short-range vertex-based pathfinder.
Integrate new pathfinder into unit motion code.
Change obstruction system to get rid of circles, and differentiate
structures from units.
Make PositionChanged messages synchronous.
Try to prevent some accidental float->int conversions.
This was SVN commit r7484.
