Use package name is neither component nor executable items are available

Related to rhbz#958974 (comment #3, comment #4)

Signed-off-by: Jakub Filak <jfilak@redhat.com>
Signed-off-by: Jiri Moskovcak <jmoskovc@redhat.com>
Use 'N/A' instead of ??

Closes rhbz#958974 (comment #2)

Signed-off-by: Jakub Filak <jfilak@redhat.com>
Signed-off-by: Jiri Moskovcak <jmoskovc@redhat.com>