pgsql: Update: < * Add support for ANSI date INTERVAL syntax, INTERVAL

Log Message:
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Update:

< * Add support for ANSI date INTERVAL syntax, INTERVAL '1-2' YEAR TO MONTH

* Add support for ANSI date INTERVAL syntax, INTERVAL '9-3' YEAR TO MONTH

Modified Files:
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pgsql/doc:
TODO (r1.1477 -> r1.1478)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1477&amp;r2=1.1478)