BulletSim: Add Force* operations to objects to allow direct push to engine.

Update BSDynamics to use same (don't want to delay updates til next taint-time.
Suppress queuing a taint update for position and orientation calls if value
    does not change.
Move Bullet timing statistics call from C# back to C++ code.
Throttle taints per simulation step and add parameter to set.
By default, don't create hulls for physical objects. Add a
    parameter to turn on and off.

OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs

@@ -306,6 +306,8 @@ public struct ConfigurationParameters
     public float linkConstraintCFM;
     public float linkConstraintSolverIterations;
 
+    public float physicsLoggingFrames;
+
     public const float numericTrue = 1f;
     public const float numericFalse = 0f;
 }