Removing the glibc NaCl port

[Adhemerval Zanella]

On 13/04/2017 12:45, Florian Weimer wrote:
> I just realized that my pipe2 removal probably breaks the NaCl port.
> 
> Can we remove it?  It blocks useful cleanups which are compatible with the out-of-tree Hurd port.
> 
> I don't think anyone has ever reported test results for release builds. scripts/build-many-glibcs.py lacks support for it, so we don't even know if it still builds.
> 
> I hope this proposal is not too controversial.
> 
> Thanks,
> Florian

Also last time I check from official documentation [1], it uses ancient
version without any documentation to actually build/check glibc on it.
I have the impression it is bit-rotten for some time.

If the idea is to keep supporting, I think we need at least proper
documentation on how to actually build and tests, preferable with 
build-many-glibc.py support. 

[1] https://developer.chrome.com/native-client/sdk/download