2000-06-21  Jon K Hellan  <hellan@acm.org>

	* ms-excel-write.c (palette_put_defaults): Ensure that black with
	index 8 can't be swapped out.
	(fixup_fill_colors): Use index 8 instead of 0 for black in
	foreground. Excel is unable to open the cell format dialog for
	cells where foreground pattern color or border color is index 0.
	(build_xf_data): Borders: Use index 8 instead of 0 for black.

	* ms-excel-read.c (ms_excel_read_cell): Add more references to BIFF
	documentation.
	(ms_excel_read_workbook): Ditto