2006-05-19  Sven Neumann  <sven@gimp.org>

	* app/tools/gimptransformoptions.[ch]: removed one of the two
	constrain properties.

	* app/tools/gimprotatetool.c
	* app/tools/gimptransformtool.c: changed accordingly.

	* app/tools/gimpscaletool.c: sync "constrain" with the size-box's
	"keep-aspect" property.