Non-functional changes of numbers into symbolic references and a few

comments on what variables really mean.

OpenSim/Region/RegionCombinerModule/RegionData.cs

@@ -34,6 +34,7 @@ namespace OpenSim.Region.RegionCombinerModule
     {
         public UUID RegionId;
         public Scene RegionScene;
+        // Offset of this region from the base of the root region.
         public Vector3 Offset;
     }
 }