* doc/dbus-specification.sgml: partial updates

	* bus/dbus-daemon-1.1.in: fix the config file docs for the
	zillionth time; hopefully I edited the right file this time.

	* bus/config-parser.c (append_rule_from_element): support
	send_type, send_path, receive_type, receive_path

	* bus/policy.c: add message type and path to the list of things
	that can be "firewalled"