2000-06-14  Michael Natterer  <mitch@gimp.org>

	* app/convolve.c
	* app/dodgeburn.c
	* app/eraser.c
	* app/paint_core.c
	* app/tools.[ch]: fixed my tool toggle braino: the paint_core
	cannot decide which cursor to show from the state of the modifier
	keys.

	Added a boolean "toggled" variable to the Tool structure,
	set it in the toggleable paint tools and evaluate it in the
	paint_core.