Add modular configuration for Robust connectors

We can provide modular ini for connectors...

    look for our configuration in the following places...
      1) in the default ini/-inifile
      2) in the named file (ConfigName) located in the configured directory
            (see Robust[.HG].ini [Start] section for ConfigDirectory)
      3) in the repository named in the connector (ConfigURL)
           In this case, the file will be written into the configured
           directory with the specified

  See example connector/service @ https://github.com/BlueWall/SlipStream
  for testing.

OpenSim/Server/Handlers/Base/ServerConnector.cs

@@ -39,8 +39,69 @@ namespace OpenSim.Server.Handlers.Base
 
     public class ServiceConnector : IServiceConnector
     {
+        public virtual string ConfigURL
+        {
+            get;
+            protected set;
+        }
+
+        public virtual string ConfigName
+        {
+            get;
+            protected set;
+        }
+
+        public virtual string ConfigFile
+        {
+            get;
+            protected set;
+        }
+
+        public virtual IConfigSource Config
+        {
+            get;
+            protected set;
+        }
+
         public ServiceConnector(IConfigSource config, IHttpServer server, string configName)
         {
         }
+
+        // We call this from our plugin module to get our configuration
+        public IConfig GetConfig()
+        { 
+            IConfig config = null;
+            config = ServerUtils.GetConfig(ConfigFile, ConfigName);
+
+            // Our file is not here? We can get one to bootstrap our plugin module
+            if ( config == null )
+            {
+                IConfigSource remotesource = GetConfigSource();
+
+                if (remotesource != null)
+                {
+                    IniConfigSource initialconfig = new IniConfigSource();
+                    initialconfig.Merge (remotesource);
+                    initialconfig.Save(ConfigFile);
+                }
+
+                config = remotesource.Configs[ConfigName];
+            }
+
+            return config;
+        }
+
+        // We get our remote initial configuration for bootstrapping
+        private IConfigSource GetConfigSource()
+        {
+            IConfigSource source = null;
+            
+            source = ServerUtils.LoadInitialConfig(ConfigURL);
+
+            if (source == null)
+                System.Console.WriteLine(String.Format ("Config Url: {0} Not found!", ConfigURL));
+
+            return source;
+        }
     }
 }