[PATCH 2/5] Import idx.h from gnulib

[Joseph Myers]

On Thu, 24 Dec 2020, Adhemerval Zanella via Libc-alpha wrote:

> +   Copyright (C) 2020 Free Software Foundation, Inc.
> +
> +   This program is free software; you can redistribute it and/or modify
> +   it under the terms of the GNU General Public License as published by
> +   the Free Software Foundation; either version 2, or (at your option)
> +   any later version.

Anything used in glibc libraries should be LGPLv2.1+, not GPL.

-- 
Joseph S. Myers
joseph@codesourcery.com