2003-11-01  Sven Neumann  <sven@gimp.org>

	Replaced the histogram tool by a histogram dialog:

	* themes/Default/images/Makefile.am
	* themes/Default/images/tools/stock-tool-histogram-[16|22].png:
	removed here ...

	* themes/Default/images/stock-histogram-[16|22].png: ,,, and added
	under these new names.

	* libgimpwidgets/gimpstock.[ch]: register the icons as
	GIMP_STOCK_HISTOGRAM and removed the histogram tool stock icons.

	* app/base/gimphistogram.c: don't crash when uncalculated values
	are requested from a GimpHistogram. Allow to reset the histogram
	by calling gimp_histogram_calculate() with a NULL region.

	* app/widgets/gimphistogrambox.[ch]: renamed the GimpHistogramView
	struct member to "view".

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

	* app/widgets/gimphistogramview.[ch] (gimp_histogram_view_events):
	return TRUE when events were handled.

	* app/tools/Makefile.am
	* app/tools/gimp-tools.c
	* app/tools/gimphistogramtool.[ch...