Simian:

* First pass at persistence support
* Fixed a chat crashing bug
* Remove avatars from the scene on logout
* Sanity check before adding objects to the scene in ObjectAdd
* Sanity check in CompleteAgentMovementHandler if the avatar is already in the scene
* Added ContainsKey() to DoubleDictionary

git-svn-id: http://libopenmetaverse.googlecode.com/svn/trunk@2245 52acb1d6-8a22-11de-b505-999d5b087335

Programs/Simian/DoubleDictionary.cs

@@ -53,6 +53,16 @@ namespace Simian
             get { return Dictionary1.Count; }
         }
 
+        public bool ContainsKey(TKey1 key)
+        {
+            return Dictionary1.ContainsKey(key);
+        }
+
+        public bool ContainsKey(TKey2 key)
+        {
+            return Dictionary2.ContainsKey(key);
+        }
+
         public bool TryGetValue(TKey1 key, out TValue value)
         {
             return Dictionary1.TryGetValue(key, out value);