2008-10-10  Michael Natterer  <mitch@gimp.org>

	* app/core/core-types.h
	* app/core/Makefile.am
	* app/core/gimpdrawablestack.[ch]: new GimpList subclass stub
	which will manage the subgraphs of layers and channels and is also
	the first step towards layer tree.

	* app/core/gimpimage.c (gimp_image_init): keep the layers and
	channels in GimpDrawableStacks instead of plain GimpLists.


svn path=/trunk/; revision=27212