2000-02-28  Jukka-Pekka Iivonen  <iivonen@iki.fi>

	* src/solver-lp.c (count_dimensions, make_solver_arrays,
	solver_affine_scaling, solver_branch_and_bound): The Solver can
	now solve the negative variables too.

	* src/dialogs/dialog-solver.c (dialog_solver_options): Made the
	`Assume non-negative' to be sensitive.