Do not output excess results

[aleksaan]

Sergey Glaznitsa: Do not render excess results.
Example of current results (limit=2):
C:\a - 100Mb
C:\a\b - 99Mb
(C:\x - 30Mb - do not output because is less than a & b folders.)

Output has two rows with the same folder. However folder c:\a contains (without C:\a\b) only 1Mb of its 100Mb volume. Only 1% of volume. And folder C:\a\b contains 99% of volume.
It is not nessesary to output c:\a volume in this case.
Results should be like that:
C:\a\b - 99Mb
C:\x - 30Mb
(C:\a - 100Mb - do not output because its "clean" size (without C:\a\b) only 1Mb and other 99Mb has been printed yet above for c:\a\b folder)

Second example:
C:\a - 100Mb (clean size is 51Mb)
C:\a\b - 49Mb
(C:\x - 30Mb - do not output because is less than a (clean size) & b size)

C:\a "clean" volume (without C:\a\b) is 51Mb and that is reason to include c:\a to results.