Make regions tolerant to newer regions with more werables.

Also, bump the interface version to 8

OpenSim/Framework/VersionInfo.cs

@@ -71,6 +71,6 @@ namespace OpenSim
         /// of the code that is too old. 
         ///
         /// </value>
-        public readonly static int MajorInterfaceVersion = 7;
+        public readonly static int MajorInterfaceVersion = 8;
     }
 }