pgsql: New routine _getObjectDescription() failed to cope with some

Log Message:
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New routine _getObjectDescription() failed to cope with some aspects of
pre-7.3 pg_dump archive files: namespace isn't there, and in some cases
te->tag may already be quotified. Per report from Alan Pevec and
followup testing.

Tags:
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REL8_0_STABLE

Modified Files:
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pgsql/src/bin/pg_dump:
pg_backup_archiver.c (r1.101 -> r1.101.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_backup_archiver.c.diff?r1=1.101&r2=1.101.4.1)