[patch] update zlib to the 1.2.10 release.

[Jeff Law]

On 01/05/2017 07:45 AM, Matthias Klose wrote:
> These are the changes updating zlib from 1.2.8 to 1.2.10. It is only used when
> building without a system zlib.  The new release includes fixes for security
> issues CVE-2016-9840, CVE-2016-9841, CVE-2016-9842, CVE-2016-9843.
>
> Checked with a build with disabled system-zlib. Ok for the trunk?
Were there any changes that we needed to carry forward or any changes 
you needed to make to the upstream sources?

Jeff