Update pg_dump to use SET DEFAULT_TABLESPACE instead of explicit

Tom Lane <tgl@sss.pgh.pa.us>

Commit: 04baa0ebf95652d8fa4a7cc62b621ade0aa6d5f4
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2004-11-06T19:36:02Z
Releases: 8.0.0
Update pg_dump to use SET DEFAULT_TABLESPACE instead of explicit
tablespace clauses; this should improve compatibility of dump files.
Philip Warner, some rework by Tom Lane.

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