remove enum Game. Instead, pass around the GameDef pointer

stepmania/src/ScreenEvaluation.cpp

@@ -101,7 +101,7 @@ void ScreenEvaluation::Init()
 		PROFILEMAN->LoadFirstAvailableProfile(PLAYER_2, false);
 
 		GAMESTATE->m_PlayMode = PLAY_MODE_REGULAR;
-		GAMESTATE->m_pCurStyle = GAMEMAN->GameAndStringToStyle( GAME_DANCE, "versus" );
+		GAMESTATE->m_pCurStyle = GAMEMAN->GameAndStringToStyle( GAMEMAN->GetDefaultGame(), "versus" );
 		GAMESTATE->m_bSideIsJoined[PLAYER_1] = true;
 		GAMESTATE->m_bSideIsJoined[PLAYER_2] = true;
 		GAMESTATE->m_MasterPlayerNumber = PLAYER_1;