Sync with IBS

Sync changes from IBS to Git repo.

See
- https://build.suse.de/package/rdiff/SUSE:Factory:Head:Internal/skelcd-control-SLED?linkrev=base&rev=23
- https://build.suse.de/package/rdiff/SUSE:Factory:Head:Internal/skelcd-control-SLED?linkrev=base&rev=24