bug#27810: NS runtime feature detection

[Alan Third]

On Mon, Jul 24, 2017 at 04:53:02PM -0400, Glenn Morris wrote:
> FWIW, a comment from someone who is disinterested in OS X:
> 
> You could probably make your life easier by not supporting more
> than Apple does. Eg on the net I read:
> 
>     Apple is only supporting Mac OS X 10.9 – 10.11. Apple stopped
>     providing security updates for Mac OS 10.8 and earlier versions with
>     the release of Mac OS X 10.11 (El Capitan) in 2015.

It would make life a lot easier, we could get rid of almost all
version dependent code. Just dropping support for 10.6 would remove a
lot too.

I doubt Charles would like that, though, and he’s the only other
person regularly working on the NS port.
-- 
Alan Third