notifications (formerly EVAalerts) centralized and race specific

outsourced into notifications.yaml
triggered with PlayNotification(...)

(v2: less redundant code for PlayVoice/Notifications)

added harvester under attack and battlecontrol terminated

OpenRA.Mods.RA/Buildings/PowerManager.cs

@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2012 The OpenRA Developers (see AUTHORS)
  * This file is part of OpenRA, which is free software. It is made
  * available to you under the terms of the GNU General Public License
  * as published by the Free Software Foundation. For more information,
@@ -108,8 +108,7 @@ namespace OpenRA.Mods.RA.Buildings
 			if (--nextPowerAdviceTime <= 0)
 			{
 				if (lowPower)
-					Player.GiveAdvice(Rules.Info["world"].Traits.Get<EvaAlertsInfo>().LowPower);
-
+					Sound.PlayNotification(self.Owner, "Speech", "LowPower", self.Owner.Country.Race);
 				nextPowerAdviceTime = Info.AdviceInterval;
 			}
 		}