2007-11-16  Michael Natterer  <mitch@gimp.org>

	* app/base/temp-buf.c
	* app/base/tile-manager.c
	* app/core/gimpobject.c: accept NULL in all get_memsize() functions.

	* app/core/gimp-utils.[ch]: ditto. Added gimp_string_get_memsize().

	* app/core/gimp.c
	* app/core/gimpbrush.c
	* app/core/gimpbuffer.c
	* app/core/gimpcontainer.c
	* app/core/gimpcontext.c
	* app/core/gimpdata.c
	* app/core/gimpdrawable.c
	* app/core/gimpdrawablemodundo.c
	* app/core/gimpdrawableundo.c
	* app/core/gimpimage.c
	* app/core/gimpitempropundo.c
	* app/core/gimplayer.c
	* app/core/gimpmaskundo.c
	* app/core/gimppalette.c
	* app/core/gimpparasitelist.c
	* app/core/gimppattern.c
	* app/core/gimppreviewcache.c
	* app/core/gimpundo.c
	* app/core/gimpundostack.c
	* app/core/gimpviewable.c
	* app/pdb/gimpprocedure.c
	* app/plug-in/gimpplugindef.c
	* app/plug-in/gimppluginmanager.c
	* app/plug-in/gimppluginprocedure.c
	* app/text/gimptext.c
	* app/text/gimptextlayer.c
	* app/text/gimptextundo.c
	* app/vectors/gimpvectorsmodundo.c: simplify
	GimpObject::get_memsize() implementations accordingly.

	* app/core/gimpimageundo.c: ditto. Always keep around colormaps in
	chunks of GIMP_IMAGE_COLORMAP_SIZE to be coonsistent with the
	other colormap handling code.


svn path=/trunk/; revision=24174