rem: process_line_count (const struct control *p, int repetition)
add: process_line_count (const struct control *p, uintmax_t repetition)
context: process_line_count (const struct control *p, int repetition){  unsigned int linenum;  uintmax_t last_line_to_save = p->lines_required * (repetition + 1);  struct cstring *line;  create_output_file ();  linenum = get_first_line_in_buffer ();  while (linenum++ < last_line_to_save)    {      line = remove_line ();      if (line == NULL)	handle_line_error (p, repetition);      save_line_to_file (line);    }  close_output_file ();  /* Ensure that the line number specified is not 1 greater than     the number of lines in the file. */  if (no_more_lines ())    handle_line_error (p, repetition);}