* tools/dbus-send.c (main): add --type argument, for now
	supporting only method_call and signal types.

	* tools/dbus-print-message.c: print message type

	* dbus/dbus-connection.c (_dbus_connection_new_for_transport):
	init connection->objects

	* doc/dbus-specification.sgml: fix sgml

	* bus/*.c: port over to object-instance API changes

	* test/test-service.c: ditto

	* dbus/dbus-message.c (dbus_message_create_header): allow #NULL
	name, we will have to fix up the rest of the code to also handle
	this
	(dbus_message_new): generic message-creation call
	(set_string_field): allow appending name field