Bug 13163: NORMARC DOM config missing <id> entry

Bug 13163: NORMARC DOM config missing <id> entry

This patch fixes the biblio-koha-indexdefs.xml for NORMARC, so
it includes the <id> element.

Because of how our DOM files work, the resulting biblio-zebra-indexdefs.xsl
for NORMARC picked the whole MARC record as ID, so every time the record
was edited, the id wouldn't match and a new record was created.

To test:
- Have a MARCXML record
- run:
  $ xsltproc etc/zebradb/marc_defs/normarc/biblios/biblio-zebra-indexdefs.xsl the_record | less
=> FAIL: verify the z:id property on the <z:record> line contains all subfields concatenated
- Apply the patch
- re-run the xsltproc line
=> SUCCESS: z:id contains the 999$c number
- Sign off :-D

Regards

Signed-off-by: Frederic Demians <f.demians@tamil.fr>
Known bug with DOM: Without <z:id> indexing biblionumber Zebra hasn't it record
unique ID, and so fails to identify existing records. Works as described. 999$c
is linked to biblionumber in default Normarc framework.

Signed-off-by: Magnus Enger <magnus@enger.priv.no>
I have applied the patch to my production server, and at least one customer has
confirmed that it fixes the problem with multiple copies of records in search
results.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Passes tests and QA script, fix matches what we have for the other MARC flavours.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>