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>

Koha/UploadedFile.pm

@@ -168,7 +168,7 @@ Returns root directory for temporary storage
 
 sub temporary_directory {
     my ( $class ) = @_;
-    return File::Spec->tmpdir;
+    return C4::Context->config('upload_tmp_path') || File::Spec->tmpdir;
 }
 
 =head3 _type