Bug 12453 - Do not use by default Host-Item-Number in UNIMARC

Bug 12453 - Do not use by default Host-Item-Number in UNIMARC

Actually, in default UNIMARC install, 461$9 is indexed as Host-Item-Number, meaning it is used for analytical itemnumber.

But most UNIMARC catalog use the analytical relation using unimarc_field_4XX.pl plugin on 461$a. In fact, this plugin is defined in default UNIMARC frameworks.

If Host-Item-Number is defined but 461$9 is used for something else, it will lead to odd bugs. For example, records containing analytical items can not be deleted.

This patch comments the 461$9 indexing in UNIMARC zebra config.

Test plan :
- Create a fresh UNIMARC install
- Create a record with 461$9 containing a value
- Index the record
- Perform a search on Host-Item-Number : ccl=Host-Item-Number,alwaysmatches=''
=> Without the patch you get a result
=> With the patch you get no result

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Code is clean, commenting out all the indexing of 461$9.
Trusting the author that this is the correct thing to do :)

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