2000-07-06  Jody Goldberg <jgoldberg@home.com>

	* ms-obj.c (ms_read_OBJ) : Take an ExcelSheet.

	* ms-escher.c (ms_escher_read_ClientData) : ms_read_OBJ takes a sheet.
	* ms-excel-read.c (ms_excel_read_sheet) : Ditto.
	(ms_excel_read_workbook) : Ditto.

	* ms-chart.c (3dbarshape) : A bit of research into probable values of
	  the enum.
	(ai) : After some thought this makes more sense.  We should only see
	  an expression if we are linked to the workbook.  Similarly we should
	  only see a format if one is specified.  We really need to avoid this
	  kludge of needing a dummy sheet.
	(areaformat) : Ignore colour index, use the stored colour.  Add some
	  more debug info.
	(lineformat) : Ditto.
	(markerformat) : Ditto.
	(ms_excel_chart) : Take an optional ExcelSheet.
	  Parse BIFF_NUMBER records when they appear.
	(ms_excel_read_chart) : Take an optional ExcelSheet.