Update to GCC copyright assignment policy

[Richard Biener]

On Thu, Jun 3, 2021 at 5:27 PM Jason Merrill via Gcc <gcc@gcc.gnu.org> wrote:
>
> On Thu, Jun 3, 2021 at 10:46 AM Giacomo Tesio <giacomo@tesio.it> wrote:
>
> >
> > I would have really appreciated if the GCC SC had announced such change
> > for the upcoming GCC 12 while sticking to the old policy in GCC 11.
> >
>
> That is how I was thinking of the change, but I agree that it needs
> clarification.

I don't think this is very practical - we'd need to check each and every commit
before considering backporting fixes, no?  So most definitely GCC 8.5, 9.4,
10.3 and 11.1 are the "last" FSF-only copyright releases and you should consider
GCC 9.4+ (there'll be a GCC 9.5) "tainted".

Richard.

> Jason