2004-08-06  Michael Natterer  <mitch@gimp.org>

	Transform tool cleanup:

	* app/tools/gimptransformtool.[ch]: added new virtual function
	GimpTransformTool::dialog_update().
	Made wrapper for ::recalc() public and function
	transform_bounding_box() private.
	Call ::dialog_update() and transform_bounding_box() from the
	::recalc() wrapper.

	* app/tools/gimpperspectivetool.[ch]
	* app/tools/gimprotatetool.[ch]
	* app/tools/gimpscaletool.[ch]
	* app/tools/gimpsheartool.[ch]: turned all info_dialog update
	functions into GimpTransformTool::dialog_update() implementations
	and don't call them from ::recalc(), also removed calls to
	transform_bounding_box(); both functions are called by the parent
	class now. Call gimp_transform_tool_recalc() when dialog values
	were changed, not the tool's internal function.
	Moved all static variables to the instance structs.