[PATCH][PULL] Add explicit feature checks

[Simon Josefsson]

Simon Josefsson <simon at josefsson.org> writes:

> Jonathan Bastien-Filiatrault <joe at x2a.org> writes:
>
>> As promised, I have added functions for explicit feature checks.
>
> Thank you.  I'll apply as soon as the FSF copyright papers have arrived.
> I'll review them when my 'git clone' finishes downloading your
> repository...

Hi!  Your papers have arrived, so we should be able to push your patch
now.  Could you send a patch against master?

Thanks,
/Simon