RDA / TPAC: Add 264 for pubinfo graphic 880 lookups

Per https://bugs.launchpad.net/evergreen/+bug/1243746 the publication
info in search results was coming up empty for RDA records because they
use 264 for publication info instead of 260.

Signed-off-by: Dan Scott <dscott@laurentian.ca>
Signed-off-by: Ben Shum <bshum@biblio.org>