1999-01-04  Havoc Pennington  <hp@pobox.com>

	* src/fn-date.c (gnumeric_date): Allocate the GDate on the stack,
		saves some small amount of time. Check user-provided
			month/day/year for validity before using it.
				(gnumeric_today): Allocate GDate on the stack.
					(gnumeric_now): Ditto.