[PATCH] Turn on -Wfree-labels by default if available

[Florian Weimer]

* Sam James:

> Florian Weimer <fweimer@redhat.com> writes:
>
>> This flags a hazard for backporting changes to earlier branches.
>>
>
> Do we need to do -Wmissing-parameter-name as well?

Right, I forgot about it.

> Reviewed-by: Sam James <sam@gentoo.org>

Thanks,
Florian