pgsql: Add: < > * Add GUC to issue notice about queries that use

Log Message:
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Add:
<

* Add GUC to issue notice about queries that use unjoined tables

Modified Files:
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pgsql/doc:
TODO (r1.1484 -> r1.1485)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1484&amp;r2=1.1485)