1998-10-01  Miguel de Icaza  <miguel@nuclecu.unam.mx>

	* src/item-grid.c (item_grid_event): Removed unused variables

	* src/gnumeric-sheet.c (gnumeric_sheet_start_cell_selection,
	gnumeric_sheet_selection_extend,
	gnumeric_sheet_selection_cursor_place): New routines for letting
	the user use the mouse to select a cell range.  Invoked from
	item-grid.c

	* src/item-grid.c (item_grid_event): Clean and reorgranize the
	event handler, remove unused variables.

	* src/gnumeric-sheet.c (selection_expand_horizontal): -1 now means
	"shrink the selection", which means Left/Up keys shrink.
	Right/Down expand.
	(selection_expand_vertical): likewise.

	* src/format.c (format_number): Fixed memory leak: this is a
	pretty bad construction: g_string_append (s, alloc_string()).  I
	just did not see it coming.  Taking metal note of this.

	* src/number-match.c (format_create_regexp): Fixed memory leaks.
	The strings returned by create_option_list need to be released.

	* src/style.c (style_color_new): Important bug fix:  The key I was
	passing was a GdkColor, but our hash table stored StyleColors
	inside.

	* src/format.c (append_year): Better fix, suggested by Morten
	Welinder <terra@diku.dk>