1999-04-22  Michael Natterer  <mitschel@cs.tu-berlin.de>

	First version of per-tool paint options. No PDB interface yet.
	The tool options dialog got rather big when in per-tool mode, so
	it will probably have to become a notebook.

	It's not yet 100% consistent. If switched off, everything should
	behave exactly like before.

	* app/Makefile.am
	* app/paint_options.h: new file

	* app/tool_options.c: PaintOptions gui. Maintain a list of all
	paint tools' ToolOptions to enable switching between global and
	per-tool paint options.

	* app/brush_select.[ch]: changed packing boxes, tables, ...
	The paint options in the brush selection can be hidden now.
	Moved create_paint_mode_menu() to paint_options.h and
	tool_options.c and renamed it to paint_mode_menu_new().

	* app/gimage_mask.c
	* app/gimpbrush.[ch]
	* app/gimpbrushlist.[ch]
	* app/paint_core.c: moved gimp_brush_[set|get]_spacing() from
	gimpbrushlist.[ch] to gimpbrush.[ch].
	Moved gimp_brush_[get|set]_[opacity|paint_mode]() to
	paint_options.h and tool_options.c and renamed them to
	paint_options_*_*().  They are "global paint options" now.

	* app/airbrush.c
	* app/blend.c
	* app/bucket_fill.c
	* app/clone.c
	* app/convolve.c
	* app/eraser.c
	* app/ink.c
	* app/paintbrush.c
	* app/pencil.c: all paint tools' options are derived from
	"PaintOptions" now. Opacity and paint mode are obtained through
	macros which take into account the current paint options mode.

	* app/buildmenu.h: #include <gtk/gtk.h>

	* app/color_picker.c
	* app/text_tool.c: changed spacings.

	* app/gimprc.[ch]: new gimprc option "global-paint-options"

	* app/preferences_dialog.c: Added a "Tool Options" page. Code
	cleanup. Some work on the convenience constructors test site.

	* app/tools.c: fixed "unused variable" warning.