https://gcc.gnu.org/ml/gcc-patches/2017-11/msg00031.html
	* cp-tree.h (enum cp_identifier_kind): Delete cik_newdel_op.
	Renumber and reserve udlit value.
	(IDENTIFIER_NEWDEL_OP): Delete.
	(IDENTIFIER_OVL_OP): New.
	(IDENTIFIER_ASSIGN_OP): Adjust.
	(IDENTIFIER_CONV_OP): Adjust.
	(IDENTIFIER_OVL_OP_INFO): Adjust.
	(IDENTIFIER_OVL_OP_FLAGS): New.
	* decl.c (grokdeclarator): Use IDENTIFIER_OVL_OP_FLAGS.
	* lex.c (get_identifier_kind_name): Adjust.
	(init_operators): Don't special case new/delete ops.
	* mangle.c (write_unqualified_id): Use IDENTIFIER_OVL_OP.
	* pt.c (push_template_decl_real): Use IDENTIFIER_OVL_OP_FLAGS.
	* typeck.c (check_return_expr): Likewise.

From-SVN: r254322