KDirectoryContentsCounter: show intermediate dir size counting results,...
KDirectoryContentsCounter: show intermediate dir size counting results, improve stopping, improve data caching Two user visible changes: * we can see the dir size changing as it is updated. * This makes the file counting a lot more reactive, when changing directories for instance. `KDirectoryContentsCounterWorker::walkDir` is not recursive anymore. The cache is now shared and only a single thread is used to count size recursively.