(no_duplicates): Static variables for the above option.
(print_help): Do not print help for --no-warn, now undocumented.
(add_node): Allow duplicate tags in ctags mode unless --no-duplicates.
+ (main): Pass the -u option to sort in ctags mode.
2006-12-28 Francesco Potort\e,Al\e(B <pot@gnu.org>