add the enhanced sort facility.
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: NDavid Hildenbrand <david@redhat.com>
Message-Id: <20190429090250.7648-7-borntraeger@de.ibm.com>
Signed-off-by: NCornelia Huck <cohuck@redhat.com>