Improved CharacterDemo/KinematicCharacterController, dynamic objects will bounce off.

Don't create a todo list for doxygen by default (the chaotic todo's would confuse most developers)
Improve support for small objects, by having dynamic contact breaking thresholds. Still needs small internal timestep and some GJK improvements.

src/BulletCollision/CollisionShapes/btCollisionShape.cpp

@@ -42,8 +42,14 @@ void	btCollisionShape::getBoundingSphere(btVector3& center,btScalar& radius) con
 	center = (aabbMin+aabbMax)*btScalar(0.5);
 }
 
+btScalar	btCollisionShape::getContactBreakingThreshold() const
+{
+	///@todo make this 0.1 configurable
+	return getAngularMotionDisc() * btScalar(0.1);
+}
 btScalar	btCollisionShape::getAngularMotionDisc() const
 {
+	///@todo cache this value, to improve performance
 	btVector3	center;
 	btScalar disc;
 	getBoundingSphere(center,disc);

src/BulletCollision/CollisionShapes/btCollisionShape.h

@@ -46,6 +46,8 @@ public:
 	///getAngularMotionDisc returns the maximus radius needed for Conservative Advancement to handle time-of-impact with rotations.
 	virtual btScalar	getAngularMotionDisc() const;
 
+	virtual btScalar	getContactBreakingThreshold() const;
+
 
 	///calculateTemporalAabb calculates the enclosing aabb for the moving object over interval [0..timeStep)
 	///result is conservative