Bug 9839 - when importing MARC records, item record not created even when set to...

Bug 9839 - when importing MARC records, item record not created even when set to "always add"

Test Plan:
1) Catalog a new record with an ISBN
2) Add some items to the record
3) Download the record as MARCXML
4) Delete the itemnumbers from the 952 fields in the record,
   Change the barcode fields to unused barcodes
5) Use xml2marc to save as a standard MARC file
6) Import the record using the 'Stage MARC for import' tool
   Use the settings:
       Record matching rule: ISBN
       Action if matching record found: ignore
       Action if no match found: ignore
       Item processing: always_add
       Check for embedded item record data?: Yes
       How to process items: Always add items
7) Import, note the bib is ignored, and the items are not processed
8) Undo import into catalog
8) Apply this patch
9) Import this batch into the catalog
10) Note the items were processed and are now added to the matching
record

Signed-off-by: Mathieu Saby <mathieu.saby@univ-rennes2.fr>
Tested with UNIMARC record. I followed the test plan, just changing 952 by 995
Signed-off-by: Mason James <mtj@kohaaloha.com>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
(cherry picked from commit a986c92c4d92da6fb1bba330cf693dde31207877)

Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>