2001-12-08  Havoc Pennington  <hp@pobox.com>

	* gconf/gconf-value.c (gconf_value_validate): take const arg

	* gconf/gconf.c: add internal API to check that GConfEngine isn't
	being used "underneath" its owning GConfClient, thus causing
	cache inconsistencies. Bad hack, yay.

	* gconf/gconf-client.c: Use new internal GConfEngine "exclusive
	owner" API
	(gconf_client_real_unreturned_error):
	silently ignore GCONF_ERROR_OVERRIDDEN, because if the system
	is "locked down" most apps will probably call gconf_client_set
	anyway.

	* gconf/gconf-client.h: fix comment to be accurate about how
	overlaps are handled