2003-04-12  Michael Natterer  <mitch@gimp.org>

	* app/config/gimpconfig-params.h: made object properties
	G_PARAM_READWRITE by default. Added flag GIMP_PARAM_AGGREGATE
	which indicates that an object property is not a reference but a
	real part of its owner.

	* app/config/gimpconfig-deserialize.c: g_object_set_property()
	object properties only if they are not GIMP_PARAM_AGGREGATE.

	* app/config/gimpconfig-utils.c (gimp_config_copy_properties,
	gimp_config_reset_properties): copy and reset GIMP_PARAM_AGGREGATE
	object properties correctly.

	* app/config/gimpconfig-serialize.c: don't call
	gimp_config_writer_open/close() for properties which are handled
	by a GimpConfigIface::serialize_property() implementation.

	* app/core/gimpcontext.c: removed exlicit G_PARAM_WRITABLE from
	object properties since that's the default now. Call
	gimp_config_writer_open/close() when serializing properties.

	* app/core/gimpviewable.c (gimp_viewable_get_pr...