Bug 10308 - local subjects can use authorities too

Bug 10308 - local subjects can use authorities too

This adds entries for 690-699 to the authorities linker, so they get
linked up like everything else.

To Test:
 * make sure your framework doesn't have 690 set up to link to
   authorities (or it'll get linked as part of cataloguing.)
 * add a subject with some term to the 690$a field.
 * add an authority for TOPIC_TERM with the matching term.
 * make sure zebra is up to date.
 * run link_bibs_to_authorities.pl over your system.
 * check that the authority is now linked to your record.
 * repeat with the other 69x fields if you like.

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Tested using 696a (PERSO_NAME). Works as described, no errors

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
This works as described, but linked authorities won't search
correctly when clicking on the link on the detail page,
as the 69x $9 is not indexed.

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