When user joins non-anonymous room, warn also in presence stanza (EJAB-310)

src/mod_muc/mod_muc_room.erl

@@ -1887,10 +1887,18 @@ send_new_presence(NJID, Reason, StateData) ->
 			   false ->
 			       []
 		       end,
+	      Status2 = case ((StateData#state.config)#config.anonymous==false)
+			    andalso (NJID == Info#user.jid) of
+			    true ->
+				[{xmlelement, "status", [{"code", "100"}], []}
+				 | Status];
+			    false ->
+				Status
+			end,
 	      Packet = xml:append_subtags(
 			 Presence,
 			 [{xmlelement, "x", [{"xmlns", ?NS_MUC_USER}],
-			   [{xmlelement, "item", ItemAttrs, ItemEls} | Status]}]),
+			   [{xmlelement, "item", ItemAttrs, ItemEls} | Status2]}]),
 	      ejabberd_router:route(
 		jlib:jid_replace_resource(StateData#state.jid, Nick),
 		Info#user.jid,