2.69: Autotest's AT_ARG_OPTION does not fill --help properly

[Akim Demaille]

Hi all,

Bison's test suite includes:

AT_ARG_OPTION([compile-c-with-cxx],
              [compile C parsers with the C++ compiler])

and running --help shows:

> $ ./tests/testsuite --help | tail
>                  default for debugging scripts
>   -d, --debug    inhibit clean up and top-level logging
>                  default for debugging scripts
>   -x, --trace    enable tests shell tracing
> 
> Other options:
> compile C parsers with the C++ compiler
> 
> Report bugs to <address@hidden>.
> General help using GNU software: <http://www.gnu.org/gethelp/>.

I think --compile-c-with-cxx was meant to be shown.  I'm using
autoconf (GNU Autoconf) 2.69.

Cheers!