Revamped chat handling a bit:

- the ChatProvider is now a proper singleton rather than providing static
methods for everything (it is accessed through CrowdServer.chatprov)
- it can now be extended to create a custom UserMessage for tells (which can
contain avatar information on systems that want to show an avatar on the
receipt of a tell)
- the ChatProvider API was tidied up a bit as some methods had been addded over
time that were not sufficiently general purpose so their callers will be
changed to use the general purpose APIs.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4251 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/crowd/peer/client/CrowdPeerService.java

@@ -27,6 +27,7 @@ import com.threerings.presents.client.Client;
 import com.threerings.presents.client.InvocationService;
 
 import com.threerings.crowd.chat.client.ChatService;
+import com.threerings.crowd.chat.data.UserMessage;
 
 /**
  * Bridges certain Crowd services between peers in a cluster configuration.
@@ -37,6 +38,6 @@ public interface CrowdPeerService extends InvocationService
      * Used to forward a tell request to the server on which the destination
      * user actually occupies.
      */
-    public void deliverTell (Client client, Name teller, Name target,
-                             String message, ChatService.TellListener listener);
+    public void deliverTell (Client client, UserMessage message, Name target,
+                             ChatService.TellListener listener);
 }