cpplib.c (special_symbol): Qualify a char* with the `const' keyword.

cpplib.c (special_symbol): Qualify a char* with the `const' keyword.

        * cpplib.c (special_symbol): Qualify a char* with the `const' keyword.
        Instead of writing to const char *buf directly, use a non-const
        variable `wbuf' to allocate and write a string, then set buf = wbuf.
        * cppulp.c (user_label_prefix): Qualify a char* with the `const'
        keyword.
        * dyn-string.c (dyn_string_append): Likewise.
        * dyn-string.h (dyn_string_append): Likewise.
        * final.c (end_final, output_operand_lossage, asm_fprintf): Likewise.
        * output.h (end_final, output_operand_lossage, asm_fprintf,
        named_section, decode_reg_name, make_decl_rtl, user_label_prefix):
        Likewise.
        * profile.c (init_branch_prob): Likewise.
        * toplev.c (set_target_switch, vmessage,
        v_message_with_file_and_line, v_message_with_decl,
        v_error_with_file_and_line, v_error_with_decl, v_error_for_asm,
        verror, vfatal, v_warning_with_file_and_line, v_warning_with_decl,
        v_warning_for_asm, vwarning, vpedwarn, v_pedwarn_with_decl,
        v_pedwarn_with_file_and_line, vsorry, v_really_sorry,
        open_dump_file, dump_rtl, clean_dump_file,
        print_version, print_single_switch, print_switch_values,
        dump_base_name, debug_args, lang_independent_options,
        user_label_prefix, documented_lang_options, target_switches,
        target_options, print_time, pfatal_with_name, fatal_io_error,
        fatal_insn, default_print_error_function, print_error_function,
        report_error_function, error_with_file_and_line, error_with_decl,
        error_for_asm, error, fatal, warning_with_file_and_line,
        warning_with_decl, warning_for_asm, warning, pedwarn,
        pedwarn_with_decl, pedwarn_with_file_and_line, sorry,
        really_sorry, botch, output_quoted_string, output_file_directive,
        open_dump_file, rest_of_decl_compilation, display_help, main):
        Likewise.
        * toplev.h (print_time, fatal, fatal_io_error, pfatal_with_name,
        fatal_insn, warning, error, pedwarn, pedwarn_with_file_and_line,
        warning_with_file_and_line, error_with_file_and_line, sorry,
        really_sorry, default_print_error_function, report_error_function,
        rest_of_decl_compilation, pedwarn_with_decl, warning_with_decl,
        error_with_decl, error_for_asm, warning_for_asm, output_quoted_string,
        output_file_directive, botch): Likewise.
        * tree.h (make_decl_rtl): Likewise.
        * varasm.c (strip_reg_name, named_section, decode_reg_name,
        make_decl_rtl): Likewise.

From-SVN: r24743