2005-08-06  Sven Neumann  <sven@gimp.org>

	* app/core/gimpscanconvert.[ch]: added gimp_scan_convert_compose(),
	an alternative to gimp_scan_convert_render() that allows to compose
	strokes on a drawable.

	* app/tools/gimpforegroundselecttool.c: use the new function to
	get rid of temporary channels for applying the strokes. Also fixed
	calculation of stroke width from display scale.