Bug 16505: <collection> is missing the marc namespace and updates fail if -x is passed

Bug 16505: <collection> is missing the marc namespace and updates fail if -x is passed

Using rebuild_zerba.pl with the -x option switch, produces an incorrect output in
terms of what our XSLTs expect for indexing. This patch introduces the right namespace information
on the exported records so indexing succeeds.

To test:
- On current master, have some records on your db
- Run:
  $ sudo koha-shell kohadev
  $ cd kohaclone
  $ misc/migration_tools/rebuild_zebra.pl -r -b -k -x
=> you will get a message like this:

NOTHING cleaned : the export /tmp/NL5ufjUfpp has been kept.

- Run
  $ less /tmp/NL5ufjUfpp/biblio/exported_records
=> FAIL: The first line looks like this

<?xml version="1.0" encoding="UTF-8"?><collection><record

- Now run:
  $ xsltproc \
     /etc/koha/zebradb/marc_defs/marc21/biblios/biblio-zebra-indexdefs.xsl \
     /tmp/NL5ufjUfpp/biblio/exported_records
=> FAIL: No output
- Apply the patch
- Run:
  $ misc/migration_tools/rebuild_zebra.pl -r -b -k -x
- Take a look at the result file:
  $ less /tmp/asdiouqwiue/biblio/exported_records
=> SUCCESS: The start of the file looks like this:
<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim">

- Run:
  $ xsltproc \
     /etc/koha/zebradb/marc_defs/marc21/biblios/biblio-zebra-indexdefs.xsl \
     /tmp/asdiouqwiue/biblio/exported_records
=> SUCCESS: There is actually indexing data :-D
- Sign off :-D

Edit: I changed qq{} for q{} as suggested by Jonathan.

Sponsored-by: American Numismatic Society
Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Works as described following test plan
No errors

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>