Bug 29486: Add check in search_for_data_inconsistencies.pl

Bug 29486: Add check in search_for_data_inconsistencies.pl

If the MARC record does not contain the correct biblionumber of
biblioitemnumber, the script will display the following warning:

== Bibliographic records have MARCXML without biblionumber or biblioitemnumber ==
        * Biblionumber 4242 has '1' in 999$c
        * Biblionumber 4242 has biblioitemnumber '4242' but should be '1' in 999$d
=> The bibliographic records must have the biblionumber and biblioitemnumber in MARCXML

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>