Bug 10793: XSLT change 780/785 search queries to use ti,phr indexes like other linkin...

Bug 10793: XSLT change 780/785 search queries to use ti,phr indexes like other linking entries

This patch adds the ti,phr index to the search queries for the 780
and 785 MARC fields in the XSLT templates.

Test Plan:

1) Use a record with 780 and 785 MARC fields with data in the "a" or
"t" subfields. (You might need to add these fields to an existing
record, or create a new record. You might also need to change your
MARC Bibliographic Framework settings to not "hide" these fields in
your framework(s)).

N.B. The data in the "a" or "t" subfields should be a title that
exists in your database. Otherwise, this test might seem misleading.

2) Set the system preferences "XSLTDetailsDisplay" and
"OPACXSLTDetailsDisplay" to "default".

3) Go to your record (which contains the 780/785 fields), and look
for links with linktext derived from the "a" or "t" fields in the
record. These may or may not be prefaced with labels such as
"Continued by" or "Continues".

4) Note that the links are formatted "q=TITLE". Click this link
and note the possibly high number of results.

5) APPLY THE PATCH

6) Shift+Refresh your record page, and observe that the link should
now say "q=ti,phr:TITLE". Click this link and note that you are
either taken directly to the referenced article or that your
search results are considerably fewer.

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
XSLT change only, no regressions found.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 275dfd2fac59c824d9591644fe982e9008032407)
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>