[PATCH] Don't install libio.h or _G_config.h

[Joseph Myers]

On Mon, 5 Feb 2018, Zack Weinberg wrote:

> Also, when not optimizing (specifically, if bits/stdio.h is not
> included) FILE will be an incomplete type.

Before C11, FILE is required to be a complete type (because it's required 
to be an object type, which did not include incomplete types before C11).

-- 
Joseph S. Myers
joseph@codesourcery.com