[PATCH gcc/* 1/2] gcc: copy expected and optional out of rust/utils

[Florian Weimer]

* Arsen Arsenović:

> +// You should have received a copy of the CC0 Public Domain Dedication
> +// along with this software. If not, see
> +// <http://creativecommons.org/publicdomain/zero/1.0/>.

Is CC0 acceptable for GCC?  It's not an allowed license for software in
Fedora.

|  CC0-1.0, which has a clause that says that it does not license or
|  otherwise "affect" patent rights, is no longer allowed, but it
|  continues to be allowed-content.

<https://docs.fedoraproject.org/en-US/legal/license-approval/>

Thanks,
Florian