add Broadcast overload

stepmania/src/MessageManager.cpp

@@ -68,6 +68,11 @@ void MessageManager::Broadcast( const CString& sMessage ) const
 	}
 }
 
+void MessageManager::Broadcast( Message m ) const
+{
+	Broadcast( MessageToString(m) );
+}
+
 // lua start
 #include "LuaBinding.h"
 

stepmania/src/MessageManager.h

@@ -83,6 +83,7 @@ public:
 	void Unsubscribe( IMessageSubscriber* pSubscriber, const CString& sMessage );
 	void Unsubscribe( IMessageSubscriber* pSubscriber, Message m );
 	void Broadcast( const CString& sMessage ) const;
+	void Broadcast( Message m ) const;
 
 	// Lua
 	void PushSelf( lua_State *L );