Patch for s390x support

[Maxim Dounin]

Hello!

On Tue, Oct 13, 2015 at 01:22:58PM +0000, Neale Ferguson wrote:

> Thanks. I have the non-builtin version of the atomic operations written
> for s390x, so on the off chance if someone wants to build using gcc < 4.1
> then things will build/run. However, given then low probability of that is
> it worth submitting the patch?

No.  The s390x platform certainly isn't that popular to justify an 
in-house atomic operations implementation.  In case someone wants 
to use a compiler without builtin atomic operations, the libatomic 
library can be used (or nginx can be used without atomic 
operations at all).

I would rather like to see C11 atomics support added - they aren't 
currently supported by nginx.

-- 
Maxim Dounin
http://nginx.org/