When looking at something different, I happened to notice that pg_dump is a bit
inconsistent in how it qualifies casts to pg_catalog entities like regclass and
oid. Most casts are qualified, but not all. Even though it functionally is
the same, being consistent is a good thing IMO and I can't see a reason not to,
so the attached patch adds qualifications (the unqualified regclass cast in the
TAP test left on purpose).
cheers ./daniel
