LP#1105225: update LOC z39.50 target seed data

This patch updates the seed data from the target list at
http://www.loc.gov/z3950/lcserver.html#addr.  It also changes the
structure attribute for the 'lccn' search attribute to wordlist,
which means that LCCNs can be searched without having to enter
the leading spaces.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Signed-off-by: Bill Erickson <berick@esilibrary.com>
Signed-off-by: Ben Shum <bshum@biblio.org>
Upgrade script for LP#1105225: LOC z39.50 seed data

Signed-off-by: Bill Erickson <berick@esilibrary.com>
Signed-off-by: Ben Shum <bshum@biblio.org>
Stamping upgrade for LOC z39.50 target seed data

Signed-off-by: Ben Shum <bshum@biblio.org>