kfileitem: show relative path for rel symlink

Méven Carrequested to merge
work/meven/kfileitem-relative into master
  • Use readlink in linkDest based on file_unix implementation
  • tilde collapse absolute path in StatusBarInfo().
  • Fix test KFileItemTest::testPermissionsString

BUG: 456198

Edited by Méven Car

Merge request reports