D5856: Use KDirWatch removeDir/addDir instead of stopDirScan/restartDirScan

[David Faure]

dfaure added a comment.


  In fact, CopyJob has no way to know whether a view somewhere is watching that directory. When an app other than Dolphin uses CopyJob, there isn't going to be any watching, possibly.
  So I think we need to remove the qDebug in KDirWatch so that removeDir is silent if the dir wasn't watched [this is faster than checking before removing, from the outside].
  
  At the same time, this shows that the CopyJob handling of m_parentDirs can be improved a little bit. Posting an update.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D5856

To: dfaure, aacid
Cc: #frameworks
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