2005-09-04  Michael Natterer  <mitch@gimp.org>

	Cleaned up and fixed the order in which default tool options and
	user context values are initialized, and added loading / saving of
	the global user context.  Fixes bug #165078.

	* app/core/Makefile.am
	* app/core/gimp-contexts.[ch]: new files which manage the global
	contexts. Contains gimp_contexts_init/exit/load/save/clear().

	* app/core/gimp.c: use the new init/exit functions instead of
	implementing the stuff here.

	* app/tools/gimp-tools.c: load/save/clear the user context from
	here so it follows the same logic as the tool options. Reset all
	tool options before loading the user context and copy the user
	context's property to all tool options before loading tool
	options.

	* app/core/gimptoolinfo.c (gimp_tool_info_new): don't initialize
	the tool options with the users context's properties. It's way too
	early here and they will be overwritten later.

	* app/widgets/gimpdevices.c (gimp_devices_restore): initialize all
	device contexts with the user context's properties before loading
	the devices and copying the active one back to the user context.