-fno-automatic option (PR 20592)

[Tobias.Schlueter@Physik.Uni-Muenchen.DE]

Quoting François-Xavier Coudert <fxcoudert@gmail.com>:
> Where flag_automatic is the new flag corresponding to the option.
> Then, if it was that simple, it would have been done earlier, but even
> thinking harder I can't find what's wrong with this simple patch. Can
> someone help me? Is this the right thing, or did I miss an obvious
> point?

I think your patch is right.  Probably noone ever investigated how this could be
done.  Consider a complete patch pre-approved, given that the option handling
itself will be straightforward to implement.

Thanks,
- Tobi