2004-09-22  Michael Natterer  <mitch@gimp.org>

	* app/plug-in/plug-in-proc-frame.[ch] (plug_in_proc_frame_init):
	removed assertion about proc_rec != NULL because that happens
	when query()ing and init()int plug-ins.

	Replaced "context" by "main_context" plus "context_stack".

	* app/plug-in/plug-in-context.c: implement plug_in_context_push()
	and plug_in_context_pop().

	* app/plug-in/plug-in-message.c
	* app/plug-in/plug-in-progress.c: changed accordingly.

	* tools/pdbgen/pdb/context.pdb: use the return values of
	plug_in_context_push() and _pop().

	* app/pdb/context_cmds.c: regenerated.

	* plug-ins/script-fu/scripts/test-sphere.scm: use
	gimp-context-push and gimp-context-pop instead of remembering the
	old values for FG, BG etc.