1998-07-21  Miguel de Icaza  <miguel@nuclecu.unam.mx>

	* src/parser.y (yylex): Numbers are parsed correctly.  Bits of
	Oleo number parsing plugged in.

	* src/util.c, src/util.h: New files with assorted number utilities.

	* src/numbers.h: New file: takes care of using gmp or regular
	double/int.

	* src/expr.c (eval_release_node): Implement.
	(eval_release_value): New function.

	* src/sheet.c (sheet_col_selection_changed,
	sheet_row_selection_changed): Implement.
	(sheet_selection_clear, sheet_selection_clear_only): Splitted
	functionality into two routines.
	(sheet_selection_clear_only): Remove any marks from the bars.
	(sheet_row_set_selection, sheet_col_set_selection): Implement.

	* src/item-bar.c (is_pointer_on_division): Return the column
	changed.

	* src/item-grid.c (item_grid_draw_cell): Fix the computation for
	right indentation.