[PATCH] Use libc_hidden_proto / _def for hidden wchar ifunc symbols.

[Florian Weimer]

On 11/13/2017 11:16 AM, Stefan Liebler wrote:
> This patch adds the libc_hidden_proto / libc_hidden_def construct.
> Then the __GI_* symbols are the default-ifunc-variants which can be 
> called without PLT.

attribute_hidden and *_hidden_{proto,def} conflict on some 
architectures.  You need to remove attribute_hidden as part of this change.

Thanks,
Florian