2006-03-23  Morten Welinder  <terra@gnome.org>

	* src/gnm-datetime.c (datetime_value_to_g): Check validity of
	date.

2006-03-23  Morten Welinder  <terra@gnome.org>

	* functions.c (gnumeric_workday): Implement a fairly decent
	version of this.
	(gnumeric_edate, gnumeric_eomonth): Improve compatibility.