Committing the interface change and the addition to the modules to get

the ball rolling on replacable modules. No user functionality yet

OpenSim/Region/CoreModules/Asset/CenomeAssetCache.cs

@@ -290,6 +290,11 @@ namespace OpenSim.Region.CoreModules.Asset
             get { return "CenomeMemoryAssetCache"; }
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         /// <summary>
         /// New region is being added to server.
         /// </summary>

OpenSim/Region/CoreModules/Asset/CoreAssetCache.cs

@@ -54,6 +54,11 @@ namespace OpenSim.Region.CoreModules.Asset
             get { return "CoreAssetCache"; }
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public void Initialise(IConfigSource source)
         {
             IConfig moduleConfig = source.Configs["Modules"];

OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs

@@ -146,6 +146,11 @@ namespace Flotsam.RegionModules.AssetCache
             m_InvalidChars.AddRange(Path.GetInvalidFileNameChars());
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return m_ModuleName; }

OpenSim/Region/CoreModules/Asset/GlynnTuckerAssetCache.cs

@@ -51,6 +51,11 @@ namespace OpenSim.Region.CoreModules.Asset
         // Instrumentation
         private uint m_DebugRate = 0;
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "GlynnTuckerAssetCache"; }