Bug 11629: (folllow-up) fix various issues

Bug 11629: (folllow-up) fix various issues

Changed the syspref.sql file to remove one of the doubled
up UNIMARCAuthrityField100 that slipped in with an earlier
patch on this bug.

Passes all tests and QA script, also t/db_dependent/Circulation_issue.t

Tested with items that had
- no notforloan value set
- notforloan value not used in updateNotforLoanStatusOnCheckin
- the notforloan value defined in UpdateNotForLoanStatusOnCheckin

Also verified it works the same, when the item was checked out or
not checked out on return.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>