5xx with $i will not link to 1xx main entries

[Srey Seng]

Authority records with 5xx fields that contain subfield $i will not link to associated 1xx when a valid matching 1xx heading exists.

Example
---------
Auth A:
=130 \0$aHealth reference series
=430 \0$aOmnigraphics' health reference series
=530 \0$wb$aHealth reference series (Unnumbered)

Auth B:
=130 \0$aHealth reference series (Unnumbered)
=430 \0$aOmnigraphics' health reference series
=530 \0$wr$iPredecessor:$aHealth reference series
---------

Given the above examples, Auth B has a 530 field that should link to Auth A.
However, because the 530 field of Auth B contains $i subfield, the link is not made during auth-auth linking.

Notes:
A reason why authority records with 5xx fields that contain subfield $i will not link to associated 1xx is due to the display_sf_list values in authority.control_set_authority_field. The display_sf_list values for the 1xx headings does not match the display_sf_list values for the 5xx headings. This leads the headings to be populated differently in the authority.simple_heading table and causes no match to be found for auth-auth linking.

The "i" should be removed from the display_sf_list values in table authority.control_set_authority_field for all 5xx tags.

[Srey Seng (sreyseng)]

Here is a WIP branch:
http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/sreyseng/LP1361362-5xx-with-i-will-not-link-to-1xx-main-entries

Testing/feedback appreciated, thanks!