QUtil::read_lines_from_file(char const* filename)
{
    std::ifstream in(filename, std::ios_base::binary);
    if (! in.is_open())
    {
        throw_system_error(std::string("open ") + filename);
    }
    std::list<std::string> lines = read_lines_from_file(in);
    in.close();
    return lines;
}
QUtil::read_lines_from_file(char const* filename)
{
    std::ifstream in(filename, std::ios_base::binary);
    if (! in.is_open())
    {
        throw_system_error(std::string("open ") + filename);
    }
    std::list<std::string> lines = read_lines_from_file(in);
    in.close();
    return lines;
}