Bug 33100: Remove all punctuation at end of record

Bug 33100: Remove all punctuation at end of record

This could potentially be overkill - if you have two records that only
differ in ending punctuation, you might get a false result - I don't
know how likely that is ( as I have mentioned before '!!!' is a band )

This seems a reasonable fix

To test:
1 - Set sysprefs as in bug 33159
2 - Edit a record, biblionumebr 3 is fine
3 - Add a comma to end of author subfield a
4 - Save and note relinked
5 - Apply patch, restart all
6 - Save again
7 - Linked to original record

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>