2003-10-15 Andrew Cagney <[email protected]>

2003-10-15  Andrew Cagney  <[email protected]>

	* target.c (target_stack): Change to a static target_ops.
	(update_current_target): Walk the "struct target_ops" stack.
	(pop_target, do_xfer_memory, target_info): Ditto.
	(find_target_beneath): Ditto.
	(push_target): Rewrite to use the "struct target_ops" stack.
	(unpush_target): Ditto.
	* target.h (struct target_stack_item): Delete definition.
	(target_stack): Delete declaration.
	(struct target_ops): Add field "beneath".