2009-10-24  Andreas J. Guelzow <aguelzow@pyrshep.ca>

	* functions.c (help_ifna): new
	(gnumeric_ifna): new
	(stat_functions): add IFNA
	* plugin.xml.in: add IFNA

2009-10-24  Andreas J. Guelzow <aguelzow@pyrshep.ca>

	* openoffice-read.c (oo_func_map_in): we now have IFNA
	  (equivalent to the ODF function B)
	* openoffice-write.c (odf_expr_func_handler): ditto