2004-05-26  Michael Natterer  <mitch@gimp.org>

	* app/paint/gimppaintcore.[ch]: removed "gdouble scale" parameter
	and added "GimpPaintOptions" in GimpPaintCore::get_paint_area().
	Check if virtual functions exist befoe calling them.

	* app/paint/gimpbrushcore.[ch]: added "gdouble scale" to GimpBrushCore
	and "gboolean use_scale" to GimpBrushCoreClass (defaults to TRUE).
	Set scale from paint_options in GimpPaintCore::get_paint_area().
	Removed "scale" parameter from gimp_brush_core_paste_canvas()
	and _replace_canvas().

	* app/paint/gimpsmudge.c (gimp_smudge_class_init): set use_scale
	to FALSE.

	* app/paint/gimpclone.c
	* app/paint/gimpconvolve.c
	* app/paint/gimpdodgeburn.c
	* app/paint/gimperaser.c
	* app/paint/gimppaintbrush.c: removed all scale calculations and
	simply pass paint_options to GimpPaintCore::get_paint_area().