https://gcc.gnu.org/ml/gcc-patches/2018-08/msg01164.html
	* include/cpplib.h (NODE_BUILTIN, NODE_MACRO_ARG): Delete.
	Renumber others.
	(enum node_type): Replace NT_MACRO with NT_USER_MACRO,
	NT_BUILTIN_MACRO, NT_MACRO_ARG.  Delete NT_ASSERTION.
	(NTV_MACRO, NTV_ANSWER, NTV_BUILTIN, NTV_ARGUMENT, NTV_NONE):
	Delete.
	(CPP_HASHNODE_VALUE_IDX): Delete.
	(union _cpp_hashnode_value): GTY tag from enum node_type directly.
	(struct cpp_hashnode): Adjust GTY desc for value field.
	(cpp_user_macro_p, cpp_builtin_macro_p, cpp_macro_p): Adjust.
	* directives.c (undefine_macros): Clear value.anwers, adjust flag
	clearing.
	(_cpp_test_assertion): No need to check NT_ASSERTION.
	(do_assert, do_unassert): Likewise.
	* init.c (cpp_init_special_builtins): Set type not flags.
	* macro.c (struct macro_arg_saved_data): Add type field.
	(cpp_get_token_1): Check type not NT_VOID.
	(_cpp_free_definition): Adjust flag clearing.  Nullify
	value.answers.
	(_cpp_save_parameter, _cpp_unsave_parameters): Save and restore
	type.
	(lex_expansion_token): Check type not flags.
	(_cpp_create_definition): Set type to NT_USER_MACRO.
	(_cpp_notify_macro_use): Adjust type checking.
	* pch.c (write_macdef, count_defs, write_defs, cpp_valid_state)
	(save_macros): Adjust node type/flag handling.
	* traditional.c (_cpp_scan_out_logical_line): Check type not flags.

From-SVN: r263667