removed useless find* files. Renamed Coin and SoQt so that it matches the system find files and config files

In this case, we just ignore the torque limit (it's just simulation, so what can go wrong :)

* allow setting all joints to kinematic
* allow to automatically set the global pose
* format code

This reverts commit 59038355.

This reverts commit 7486124d.

* add DynamicsWorld::{getObjects, removeFloorPlane, clear)
* add DynamicsEngine::removeFloorPlane
* add BulletEngine::removeFloorPlane