2005-08-29  Michael Natterer  <mitch@gimp.org>

	The previous commit added tons of code just to completely break
	clone align behavior. Reverted lots of the changes and do the
	sample-merged stuff at the innermost place (gimp_clone_motion).
	This change also enables changing sample-merged between paint
	strokes.

	* app/paint/gimpclone.[ch] (struct GimpClone): changed member
	"src_pickable" back to "src_drawable".

	(gimp_clone_paint): completely reverted.

	(gimp_clone_motion): do the drawable/projection -> pickable
	stuff and drawable offset handling here.

	Fixed signal handling to connect to the drawable's "removed"
	signal (not "disconnect", eek). Disconnect from the signal once
	the drawable has been removed.

	* app/tools/gimpclonetool.c: changed accordingly.