Bug in storage/ndb/tools/NdbImportCsv.cpp date functions

[smkniazi]

For time "1111-11-11 11:11:11.123" with precision 3 packing and unpacking corrupts the time

    date_str= "1111-11-11 11:11:11.123"
    MYSQL_TIME l_time;
    MYSQL_TIME_STATUS status;
    bool ret = str_to_datetime(date_str, date_str_len, &l_time, 0, &status);

    size_t packed_len = col->getSizeInBytes();
    int precision     = col->getPrecision();
    std::cout << date_str << " Precision is " << precision << " size : " << packed_len << "   sign "
              << l_time.neg << " table: " << table_dic->getName() << std::endl;
    Datetime2 d2;
    d2.day      = l_time.day;
    d2.month    = l_time.month;
    d2.year     = l_time.year;
    d2.hour     = l_time.hour;
    d2.minute   = l_time.minute;
    d2.second   = l_time.second;
    d2.fraction = l_time.second_part;
    d2.sign     = 1;
    std::cout << "mysql " << l_time.year << " " << l_time.month << " " << l_time.day << " "
              << l_time.hour << " " << l_time.minute << " " << l_time.second << " "
              << l_time.second_part << std::endl;

    unsigned char packed[packed_len];
    pack_datetime2(d2, packed, precision);

    Datetime2 d3;
    unpack_datetime2(d3, packed, precision);
    std::cout << "unpacked  " << d3.year << " " << d3.month << " " << d3.day << " " << d3.hour << " "
              << d3.minute << " " << d3.second << " " << d3.fraction << std::endl;

output

1111-11-11 11:11:11.123 Precision is 3 size : 7   sign 0 table: date_table3
mysql 1111 11 11 11 11 11 123000
unpacked 1111 11 11 11 11 27 5035