2000-01-26  Jukka-Pekka Iivonen  <iivonen@iki.fi>

	* src/solver-lp.c: Implemented the `>=' and `=' constraints.
  	Solver should be quite usable now for LP problems assumed to be
 	non-negative.

	* src/dialogs/dialog-solver.c: Related changes.

	* src/dialogs/advanced-filter.glade,
 	src/dialogs/dialog-advanced-filter.c: New files added.  Not done
 	yet.