pgsql: Done; o -Add support for day-time syntax, INTERVAL '1

Log Message:
-----------
Done;

o -Add support for day-time syntax, INTERVAL '1 2:03:04'DAY TO
SECOND

Modified Files:
--------------
pgsql/doc:
TODO (r1.1806 -> r1.1807)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1806&r2=1.1807)
pgsql/doc/src/FAQ:
TODO.html (r1.309 -> r1.310)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.309&r2=1.310)