D9983: Don't stat(/etc/localtime) between read() and write() copying files

[Luca Beltrame]

lbeltrame added a reviewer: dfaure.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D9983

To: jtamate, #frameworks, dfaure
Cc: fvogt, ngraham