Thu Mar 18 19:35:48 EST 1999  Adrian Likins <adrian@gimp.org>

        * app/paintbrush.c
        * app/paint_core.c
        * app/paint_core.h: moved all the code for figuring out the
        paint_core->distance to color stuff to paint_core.[ch]. Updated
        paintbrush.c to use the new function. Also now can either loop
        thorugh the gradient (sawtooth, start->end, start->end or
        triangle start->end,end->start). Also mode for going
        thought the gradient once, forwards or backwards. None of these
        options are available from the gui or the PDB yet though.

-adrian