Update to glibc copyright assignment policy

[Siddhesh Poyarekar]

On 7/29/21 7:28 PM, Carlos O'Donell wrote:
> The code shared with gnulib carries with it an existing obligation
> to the gnulib community that we maintain the existing copyright
> protocol for those files to honour that obligation.
> 
> My suggestion is that we as a community in glibc need to decide,
> on a file-by-file basis what we are going to do. I'm open to other
> alternatives too, the following 2 steps are just my suggestion.
> 
> (1) Update https://sourceware.org/glibc/wiki/SharedSourceFiles with
>      the actual file status.
> 
> (2) Make a decision.
> 
> * Find a new way to share the code with minimal impact.
>    - Carve out glibc-related functions into distinct files that can
>      have DCO.
>    - Leave the #_LIBC conditionals with minimal code.
> 
> * Stop sharing this code with gnulib, and own it.
>    - Delete !#_LIBC code.
>    - Simplify.
>    - Use internal glibc interfaces
>    - etc.
> 
> Does that answer your question?
> 

Yes it does, thank you.  I agree that taking a call on a case by case 
basis seems like the right way to go about it.

Thanks,
Siddhesh