Add "show object pos <start-coord> to <end-coord>" command to simulator console.

This allows you to display details of all objects in a given bounding box.
Values parts of the co-ord can be left out as appropriate (e.g. to get all objects between the ground and z=30.
See "help show object pos" for more details.

OpenSim/Framework/Util.cs

@@ -533,6 +533,19 @@ namespace OpenSim.Framework
             return (x + y - (min >> 1) - (min >> 2) + (min >> 4));
         }
 
+        /// <summary>
+        /// Determines whether a point is inside a bounding box.
+        /// </summary>
+        /// <param name='v'>/param>
+        /// <param name='min'></param>
+        /// <param name='max'></param>
+        /// <returns></returns>
+        public static bool IsInsideBox(Vector3 v, Vector3 min, Vector3 max)
+        {
+            return v.X >= min.X & v.Y >= min.Y && v.Z >= min.Z
+                && v.X <= max.X && v.Y <= max.Y && v.Z <= max.Z;
+        }
+
         /// <summary>
         /// Are the co-ordinates of the new region visible from the old region?
         /// </summary>