pgsql: Fix incorrect logic for excluding range constructor functions in

Fix incorrect logic for excluding range constructor functions in pg_dump.

Faulty AND/OR nesting in the WHERE clause of getFuncs' SQL query led to
dumping range constructor functions if they are part of an extension
and we're in binary-upgrade mode. Actually, we don't want to dump them
separately even then, since CREATE TYPE AS RANGE will create the range's
constructor functions regardless. Per report from Andrew Dunstan.

It looks like this mistake was introduced by me, in commit b985d4877, in
perhaps-overzealous refactoring to reduce code duplication. I'm suitably
embarrassed.

Report: <34854939-02d7-f591-5677-ce2994104599(at)dunslane(dot)net>

Branch
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REL9_5_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/96e16d73918f57ba8dd45d7708092d6220263bfc

Modified Files
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src/bin/pg_dump/pg_dump.c | 37 +++++++++++++++++++++----------------
1 file changed, 21 insertions(+), 16 deletions(-)