D29558: Add KIO::OpenUrlJob::setShowOpenWithDialog as replacement for KRun::displayOpenWithDialog

[David Faure]

dfaure added a reviewer: svuorela.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D29558

To: dfaure, ahmadsamir, broulik, svuorela
Cc: kde-frameworks-devel, LeGast00n, cblack, michaelh, ngraham, bruns