D29562: KDirectoryContentsCounter: Avoid scanning twice the same dir, prioritise path not in cache

[Méven Car]

meven added a task: T13083: Dolphin: improvements to directory size counting.

REPOSITORY
  R318 Dolphin

REVISION DETAIL
  https://phabricator.kde.org/D29562

To: meven, #dolphin, elvisangelaccio, ngraham
Cc: kfm-devel, waitquietly, azyx, nikolaik, pberestov, iasensio, aprcela, fprice, fbampaloukas, alexde, Codezela, feverfew, meven, spoorun, navarromorales, firef, ngraham, andrebarros, emmanuelp, rdieter, mikesomov
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