pgsql: Please find attached diffs for documentation and simple

Log Message:
-----------
Please find attached diffs for documentation and simple regression
tests for the new interval->day changes. I added tests for
justify_hours() and justify_days() to interval.sql, as they take
interval input and produce interval output. If there's a more
appropriate place for them, please let me know.

Michael Glaesemann

Modified Files:
--------------
pgsql/doc/src/sgml:
func.sgml (r1.273 -> r1.274)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/func.sgml.diff?r1=1.273&r2=1.274)
pgsql/src/test/regress/expected:
horology.out (r1.56 -> r1.57)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/horology.out.diff?r1=1.56&r2=1.57)
interval.out (r1.12 -> r1.13)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/interval.out.diff?r1=1.12&r2=1.13)
pgsql/src/test/regress/sql:
horology.sql (r1.30 -> r1.31)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/sql/horology.sql.diff?r1=1.30&r2=1.31)
interval.sql (r1.7 -> r1.8)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/sql/interval.sql.diff?r1=1.7&r2=1.8)