1999-01-03  Miguel de Icaza  <miguel@nuclecu.unam.mx>

	* src/expr.c (eval_expr): Add support for non-local cells here.  I
	am impressed how simple this was.

	* src/parser.y: Add rules for cell references outside of the
	current sheet.

	* src/main.c: New option --debug.  Turns on the zoom in/zoom out
	buttons on the main sheet.

	* src/workbook.c: Include the zoom in/zoom out buttons conditionally.

	* src/xml-io.c (xmlGetCoordinates): Load using double numbers the
	information.

	* src/parser.y (yylex): Allow strings to be specified with "'"
	characters.