Allow reloption names to have qualifiers, initially supporting a TOAST
Alvaro Herrera <alvherre@alvh.no-ip.org>
Allow reloption names to have qualifiers, initially supporting a TOAST qualifier, and add support for this in pg_dump. This allows TOAST tables to have user-defined fillfactor, and will also enable us to move the autovacuum parameters to reloptions without taking away the possibility of setting values for TOAST tables.