* dbus/dbus-mainloop.c (_dbus_loop_iterate): fix UMR in verbose
	debug spew

	* dbus/dbus-auth.c (handle_client_data_cookie_sha1_mech): fix OOM
	handling problem

	* dbus/dbus-keyring.c (_dbus_keyring_new_homedir): only whine
	about DBUS_TEST_HOMEDIR once

	* bus/Makefile.am (TESTS_ENVIRONMENT): put DBUS_TEST_HOMEDIR in
	the environment

	* bus/dispatch.c (bus_dispatch_sha1_test): actually load sha1
	config file so we test the right thing

	Throughout: assorted docs improvements