There is one other consideration, and that is that current pg_dump likes
to set session_auth to user of object before outputting drop command,
when '-c' is specificed.
I propose that we eliminate that set session_auth as well. If the user
running the script is the owner of that object or a superuser, then they
will be able to drop it. If they are neither, then the drop will fail,
but the session_authorization would have failed anyway!
Chris