Bug 20428: Make Koha::UploadedFile use the new config entry for tmp files
This patch makes Koha::UploadedFile->temporary_directory try to use the
new configuration entry. It will fallback to File::Spec->tmpdir
otherwise.
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com> Signed-off-by: Mark Tompsett <mtompset@hotmail.com> Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl> Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>