The beginings of name simplification.

2001-04-04  Jody Goldberg <jgoldberg@home.com>

	* ms-excel-read.c (ms_excel_externsheet) : new function split from
	(ms_excel_read_workbook) : here.

	* ms-excel-read.c (biff_name_data_new) : begin cleanup.  The
	  sheet_index is stored in different places for different biff types.
	  There also appears to be enough data about the sheet names that we
	  may not need to do this magic delayed instantiation.

2001-04-03  Jody Goldberg <jgoldberg@home.com>

	* ms-chart.c (ms_excel_chart) : provide stub handlers for container
	  virtuals.

2001-04-02  Jody Goldberg <jgoldberg@home.com>

	* ms-excel-read.c (ms_excel_read_imdata) : new routine pulled from.
	(ms_excel_read_cell) : here.

	* ms-obj.c (ms_obj_read_biff8_obj) : used here.

2001-04-01  Jody Goldberg <jgoldberg@home.com>

	* ms-escher.c (ms_escher_get_data) : improve diagnostic info.

	* ms-obj.c (ms_obj_read_biff8_obj) : when reading the mystery trailing
	  IMDATA we need to handle CONTINUE.  We really need to figure out
	  what this is.