varregion: many more updates removing the constant RegionSize and replacing

with a passed region size. This time in the map code and grid services code.

OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs

@@ -1311,7 +1311,7 @@ private sealed class BulletConstraintXNA : BulletConstraint
         /* TODO */
         ConfigurationParameters[] configparms = new ConfigurationParameters[1];
         configparms[0] = parms;
-        Vector3 worldExtent = new Vector3(Constants.RegionSize, Constants.RegionSize, Constants.RegionHeight);
+        Vector3 worldExtent = maxPosition;
         m_maxCollisions = maxCollisions;
         m_maxUpdatesPerFrame = maxUpdates;
         specialCollisionObjects = new Dictionary<uint, GhostObject>();

OpenSim/Region/Physics/BulletSPlugin/BSScene.cs

@@ -208,6 +208,7 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
         Name = EngineType + "/" + RegionName;
     }
 
+    // Old version of initialization that assumes legacy sized regions (256x256)
     public override void Initialise(IMesher meshmerizer, IConfigSource config)
     {
         m_log.ErrorFormat("{0} WARNING WARNING WARNING! BulletSim initialized without region extent specification. Terrain will be messed up.");