Fix up the Name System just a little bit more.

Better viewed without space changes
Pretty much add support for sending LLAvatarName and std::string to become a name via the system...
Also a bit of a revert for llcallingcard.cpp in this regard, just allow it to use a callback along with the new support,
but still handle the actual name switching in LLAvatarNameCache.
Fixes a problem I was having with "[NAME] is Online" notifications appearing early on, only.

indra/llmessage/llavatarnamecache.cpp

@@ -666,10 +666,17 @@ bool LLAvatarNameCache::get(const LLUUID& agent_id, LLAvatarName *av_name)
 // Return true when name has been set to Phoenix Name System Name, if not return false.
 bool LLAvatarNameCache::getPNSName(const LLUUID& agent_id, std::string& name)
 {
-	static LLCachedControl<S32> phoenix_name_system("PhoenixNameSystem", 0);
 	LLAvatarName avatar_name;
-	if (LLAvatarNameCache::get(agent_id, &avatar_name))
+	if (get(agent_id, &avatar_name))
-	{
+		getPNSName(avatar_name, name);
+	else return false;
+	return true;
+}
+
+// get() with callback compatible version of getPNSName
+void LLAvatarNameCache::getPNSName(const LLAvatarName& avatar_name, std::string& name)
+{
+	static LLCachedControl<S32> phoenix_name_system("PhoenixNameSystem", 0);
 	switch (phoenix_name_system)
 	{
 		case 0 : name = avatar_name.getLegacyName(); break;
@@ -677,11 +684,6 @@ bool LLAvatarNameCache::getPNSName(const LLUUID& agent_id, std::string& name)
 		case 2 : name = avatar_name.mDisplayName; break;
 		default : name = avatar_name.getLegacyName(); break;
 	}
-		return true;
-	}
-	if (gCacheName->getFullName(agent_id, name)) //We've failed, try to get the legacy name anyway
-		return false; //Legacy name is still a failure, it's not a PNSName, afterall.
-	return false;
 }
 
 void LLAvatarNameCache::fireSignal(const LLUUID& agent_id,

indra/llmessage/llavatarnamecache.h

@@ -65,9 +65,12 @@ namespace LLAvatarNameCache
 	// If name is in cache, returns true and fills in provided LLAvatarName
 	// otherwise returns false
 	bool get(const LLUUID& agent_id, LLAvatarName *av_name);
-	// If get() succeeds, returns true and fills in name string according to Phoenix Name System
+	// If get() succeeds, returns true and fills in name string
-	// otherwise returns false
+	// via void function below, otherwise returns false
 	bool getPNSName(const LLUUID& agent_id, std::string& name);
+	// Perform a filling of name string according to Phoenix Name System,
+	// when we have an LLAvatarName already.
+	void getPNSName(const LLAvatarName& avatar_name, std::string& name);
 
 	// Callback types for get() below
 	typedef boost::signals2::signal<

indra/newview/llcallingcard.cpp

@@ -99,6 +99,11 @@ const F32 OFFLINE_SECONDS = FIND_FREQUENCY + 8.0f;
 // static
 LLAvatarTracker LLAvatarTracker::sInstance;
 
+static void on_avatar_name_cache_notify(const LLUUID& agent_id,
+										const LLAvatarName& av_name,
+										bool online,
+										LLSD payload);
+
 ///----------------------------------------------------------------------------
 /// Class LLAvatarTracker
 ///----------------------------------------------------------------------------
@@ -706,9 +711,27 @@ void LLAvatarTracker::processNotify(LLMessageSystem* msg, bool online)
 		if(chat_notify)
 		{
 			// Look up the name of this agent for the notification
+			LLAvatarNameCache::get(agent_id,
+				boost::bind(&on_avatar_name_cache_notify,
+					_1, _2, online, payload));
+		}
+
+		mModifyMask |= LLFriendObserver::ONLINE;
+		instance().notifyObservers();
+		gInventory.notifyObservers();
+	}
+}
+
+static void on_avatar_name_cache_notify(const LLUUID& agent_id,
+										const LLAvatarName& av_name,
+										bool online,
+										LLSD payload)
+{
+	// Popup a notify box with online status of this agent
+	// Use display name only because this user is your friend
 	std::string name;
+	LLAvatarNameCache::getPNSName(av_name, name);
 	LLSD args;
-			if (LLAvatarNameCache::getPNSName(agent_id, name))
 	args["NAME"] = name;
 
 	// Popup a notify box with online status of this agent
@@ -723,12 +746,6 @@ void LLAvatarTracker::processNotify(LLMessageSystem* msg, bool online)
 		if (!notifyMsg.empty())
 			floater->addHistoryLine(notifyMsg,gSavedSettings.getColor4("SystemChatColor"));
 	}
-		}
-
-		mModifyMask |= LLFriendObserver::ONLINE;
-		instance().notifyObservers();
-		gInventory.notifyObservers();
-	}
 }
 
 void LLAvatarTracker::formFriendship(const LLUUID& id)