Avatar physics update
A significant and much needed cleanup of the avatar physics code. It resolves numerous issue with and greatly simplifies the physx character controller implementation.
While there is still room for improvement, this is a good starting point.
Avatars now jump consistently, regardless of cpu speed. Fixes unexpected camera transitions with entering/exiting some subworlds. (Teledahn elevator) Fixes a jitter in animated subworlds. (Er'cana harvester) Dynamic controllers are correctly positioned on the ground. (Jalak) Much improved interaction with dynamic physicals.
Other physics related issues may or may not be addressed.