self-registering screen classes

stepmania/src/ScreenSetTime.cpp

@@ -36,6 +36,7 @@ static float GetTitleY( SetTimeSelection s ) { return g_Y[s]; }
 static float GetValueX( SetTimeSelection s ) { return g_X[s] + 80; }
 static float GetValueY( SetTimeSelection s ) { return g_Y[s]; }
 
+REGISTER_SCREEN_CLASS( ScreenSetTime );
 ScreenSetTime::ScreenSetTime( CString sClassName ) : ScreenWithMenuElements( sClassName )
 {
 	LOG->Trace( "ScreenSetTime::ScreenSetTime()" );