various bugfixes/updates

unlock system now supports clear and failed extra stages
songs unlocked by roulette are no longer unlocked by selecting them as extra stage
'fixed' survived time for extra stage when failing

stepmania/src/ScreenEvaluation.cpp

@@ -135,8 +135,17 @@ ScreenEvaluation::ScreenEvaluation( CString sClassName, Type type ) : Screen(sCl
 
 	Grade max_grade = GRADE_NO_DATA;
 	for( p=0; p<NUM_PLAYERS; p++ )
+	{
 		max_grade = max( max_grade, grade[p] ); 
 
+		// if its extra stage, update # passed stages
+		if (PREFSMAN->m_bUseUnlockSystem &&
+			(GAMESTATE->IsExtraStage() || GAMESTATE->IsExtraStage2() ) &&
+			grade[p] > GRADE_E &&
+			m_Type != summary)
+					GAMESTATE->m_pUnlockingSys->UnlockClearExtraStage();
+	}
+
 
 	//
 	// update persistent statistics