the grid line intersection and move them into the border drawing routines.
However, as a proof of concept we're pretty close.

2001-02-01  Jody Goldberg <jgoldberg@home.com>

	* src/sheet.c (sheet_get_extent) : don't call style_extent.  The
	  caller can do that if desired.

	* src/item-grid.c (item_grid_draw) : Use the new drawing code.

	* src/style-border.c (style_border_fetch) : init 'width'
	(style_border_set_gc_dash) : Use 'CAP_NOT_LAST' to get consistent
	  behavior with width 0 and width > 0 lines.
	(style_border_hdraw) : implement.
	(style_border_vdraw) : implement.