Updated AnnoucerManager::GetPathTo to act like ThemeManager. More theme and Ez2 cleanup.

stepmania/src/Screen.cpp

@@ -46,7 +46,7 @@ void Screen::Update( float fDeltaTime )
 	}
 }
 
-void Screen::MenuBack(	const PlayerNumber p, const InputEventType type )
+void Screen::MenuBack(	PlayerNumber p, const InputEventType type )
 {
 	if(!PREFSMAN->m_bDelayedEscape || type==IET_SLOW_REPEAT || type==IET_FAST_REPEAT)
 		MenuBack(p);