Mark some long obsolete functions as deprecated so the can be removed
with Qt6:
- QDialog::setOrientation()/orientation()
- QDialog::setExtension()/extension()/showExtension()
- QFileDialog::setNameFilterDetailsVisible()/isNameFilterDetailsVisible()
- QFileDialog::setResolveSymlinks()/resolveSymlinks()
Change-Id: Ibbd5b4192ea8ab483d6b2a8dbf9879f29f9ee86d
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
edc455c69b