* system.h (PROMOTE_FUNCTION_ARGS, STRUCT_VALUE_INCOMING, and
	STRICT_ARGUMENT_NAMING): Poison.
	* target-def.h (TARGET_PROMOTE_FUNCTION_ARGS): Define as
	hook_bool_tree_false.
	* targhooks.c (default_promote_function_args): Remove.
	(default_struct_value_rtx): Don't use STRUCT_VALUE_INCOMING.
	Don't check incoming.
	(default_strict_argument_naming): Don't use
	STRICT_ARGUMENT_NAMING.
	* targhooks.h: Remove the prototype for
	default_promote_function_args.

From-SVN: r77047