Eliminate GameState::EndGame; games don't necessarily have distinct

endings.  Update the play timer periodically when we commit scores.
(This timer is a bit different, but reasonable.)

stepmania/src/GameLoop.cpp

@@ -213,7 +213,7 @@ void GameLoop::RunGameLoop()
 
 	/* If we ended mid-game, finish up. */
 	GAMESTATE->FinishStage();
-	GAMESTATE->EndGame();
+	GAMESTATE->SaveLocalData();
 
 	if( ChangeAppPri() )
 		HOOKS->UnBoostPriority();