From Alan Webb <awebb@linux.vnet.ibm.com>

These changes replace all direct references to the AssetCache with
IAssetCache. There is no change to functionality. Everything works as
before.

This is laying the groundwork for making it possible to register
alternative asset caching mechanisms without disrupting other parts of
OpenSim or their dependencies upon AssetCache functionality.

OpenSim/Region/ClientStack/LindenUDP/LLPacketServer.cs

@@ -90,7 +90,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// <param name="proxyEP"></param>
         /// <returns></returns>
         protected virtual IClientAPI CreateNewCircuit(
-            EndPoint remoteEP, IScene scene, AssetCache assetCache,
+            EndPoint remoteEP, IScene scene, IAssetCache assetCache,
             LLPacketServer packServer, AuthenticateResponse sessionInfo,
              UUID agentId, UUID sessionId, uint circuitCode, EndPoint proxyEP)
         {
@@ -134,7 +134,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         /// true if a new circuit was created, false if a circuit with the given circuit code already existed
         /// </returns>        
         public virtual bool AddNewClient(
-            EndPoint epSender, UseCircuitCodePacket useCircuit, AssetCache assetCache,
+            EndPoint epSender, UseCircuitCodePacket useCircuit, IAssetCache assetCache,
             AuthenticateResponse sessionInfo, EndPoint proxyEP)
         {
             IClientAPI newuser;