1999-12-30  Jukka-Pekka Iivonen  <iivonen@iki.fi>

	* src/solver-lp.c: Implemented Simplex algorithm.  It can
 	currently solve LP maximization problems of positive variables
 	having `<=' constraints.

	* src/workbook.c: Added `Solver' tool.

	* src/utils.c (parse_cell_name_list): Bug fix.  The last item on
 	the list was not included on the list.