* stack.c (return_command): Use frame architecture to determine

	* stack.c (return_command): Use frame architecture to determine
	default integer return type.

	* f-valprint.c (f77_get_dynamic_lowerbound): Use frame architecture
	to determine pointer types.
	(f77_get_dynamic_upperbound): Likewise.

	* objc-lang.c (OBJC_FETCH_POINTER_ARGUMENT): Remove.
	(resolve_msgsend): Use architecture of current frame to determine
	pointer types.  Inline OBJC_FETCH_POINTER_ARGUMENT.
	(resolve_msgsend_stret, resolve_msgsend_super,
	resolve_msgsend_super_stret): Likewise.