2001-11-17  Michael Natterer  <mitch@gimp.org>

	Made --no-interface not calling gtk_init() (and thus not
	contacting the X server) any more. (Fixes #58961).

	* app/core/gimp.[ch]: added two new function pointers
	"gui_main_loop_func" and "gui_main_loop_quit_func" and an own
	stack of GMainLoops which is used if they are not set.

	* app/gui/gui.[ch]: added main loop functions here and set them as
	pointers in the Gimp instance. Separated gui_libs_init() from
	gui_themes_init() so it can be used as replacement for gtk_init()
	and be called before command line parsing.

	* app/main.c: check for "--no-interface" before initializing
	anything. Added a "--g-fatal-warnings" option (cut'n'paste from
	gtkmain.c). Added a check for "--" (end of options).

	* app/app_procs.c: call the new gimp_main_loop() functions,
	call gui_themes_init().

	* app/devices.[ch]: reduce usage of "the_gimp" by passing "Gimp"
	pointers to some functions.

	* app/plug_in.c: some ugly checks for the_gimp->no_interface which
	will go away once this file is core/ui chopped. Call
	gimp_main_loop() stuff instead of gtk_main().

	* app/core/gimptoolinfo.c: allow passing a NUL GdkPixbuf pointer.