Bug 8620: Any index in DOM mode sensitive to -x flag of rebuild_zebra.pl

Bug 8620: Any index in DOM mode sensitive to -x flag of rebuild_zebra.pl

The definition of the Any index was sensitive to whether
spaces were present between (say) subfield elements in the
MARCXML representation of the bib being indexed.  When using
the -x option to rebuild_zebra.pl, spaces would be present
because of how MARC::File::XML emits MARCXML.

When not using the -x option, spaces would not be present
and the contents of a field would be run together, potentially
as one big token.

The visible behavior was that doing a keyword search by
item barcode would sometimes not work.

To test:
0) Make sure Zebra is using DOM mode
1) Create an item record.
2) Reindex using rebuild_zebra.pl -b -z, *without* -x
3) Do a keyword search by the barcode of the item just
   added; the search shouldn't work
4) Apply patch.
5) Update the following two files:
    etc/zebradb/marc_defs/marc21/biblios/biblio-zebra-indexdefs.xsl
    etc/zebradb/xsl/koha-indexdefs-to-zebra.xsl
6) Reindex
7) Do a search that was previously failing.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Fixes the problem for me - formerly not working callnumbers
and barcodes are now found in keyword (any) searches.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(revised commit description to better explain why it fixes the problem)

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Passes all my tests, happy to sign off
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>