* cpplib.h (struct cpp_reader): Remove references to string_pool
        and temp_string_pool.
        * cppinit.c (cpp_create_reader, cpp_cleanup): Similarly; using
        ident_pool in place.
        * cpplex.c (parse_number, unescaped_terminator_p, parse_string,
        save_comment, cpp_token_as_text): Similarly.
        * cpplib.c (do_define, glue_header_name, parse_assertion): Similarly.
        * cppmacro.c (make_number_token, builtin_macro, lock_pools,
        unlock_pools, stringify_arg, paste_tokens): Similarly.

From-SVN: r38336