Patch ping

[Wilco Dijkstra]

Siddhesh Poyarekar wrote:

> I submitted the following patches for review last month; I'd love to have feedback on it. Thanks!

> https://www.sourceware.org/ml/newlib/2018/msg00463.html
> https://www.sourceware.org/ml/newlib/2018/msg00465.html
> https://www.sourceware.org/ml/newlib/2018/msg00464.html
> https://www.sourceware.org/ml/newlib/2018/msg00466.html

Thanks, these are all good improvements for AArch64, so OK from me.

Wilco