Remove Temporary from use to shortcut asset stores. The Local property

differentiates between local & grid storage. The Temporary property just
says that which service handles the it, the asset can be safely removed
in the future.

OpenSim/Capabilities/Handlers/GetTexture/GetTextureHandler.cs

@@ -189,6 +189,7 @@ namespace OpenSim.Capabilities.Handlers
 
                             newTexture.Flags = AssetFlags.Collectable;
                             newTexture.Temporary = true;
+                            newTexture.Local = true;
                             m_assetService.Store(newTexture);
                             WriteTextureData(httpRequest, httpResponse, newTexture, format);
                             return true;