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	collect_params): Make some pointers pointers to const.
	* cpplex.c (auto_expand_name_space) Guaranteed to always
	expand by at least one character.
	(SPELL_CHAR, SPELL_NONE): Temporarily reverse order.
	(struct token_spelling): Use const U_CHAR * rather than PTR.
	(expand_name_space): Fix up token pointers if name space
	is moved when expanding.
	(INIT_NAME, cpp_scan_line, parse_name, parse_number,
	parse_string2, save_comment, spell_token, cpp_output_list):
	Update so the routines handle tokens with a direct pointer to
	their text, rather than an offset into the token's list's namebuf.
	(_cpp_lex_line): Rearrange for clarity.

	* cpplib.c (_cpp_check_directive): Similarly.
	(do_define): Make SYM a pointer to const.
	* cpplib.h (struct cpp_name): Replace offset with direct pointer.
	(CPP_INT, CPP_FLOAT): Spelling type should be SPELL_IDENT.
	(TOK_OFFSET): Delete.
	(TOK_NAME): Update.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@33901 138bc75d-0d04-0410-961f-82ee72b054a4