RFC: Create a COPYING_v2 file and update files in ginclude to refer to it

[Nick Clifton]

Hi Ian,

>>     1. It creates a new file in the gcc/ directory called COPYING_v2
>>        which contains a copy of version 2 of the GPL.

> I don't really object to this, but it seems like a bit of churn in
> gcc/ginclude for no very important reason.  Presumably the SC and the
> FSF will soon come to an agreement as to what the GPL+exception files
> should look like with GPLv3.  At that time you, or somebody, will have
> to change the gcc/ginclude files again.

True.

> Since there is no imminent
> release, what's the advantage in changing those files now?

Just being cautious.  My aim is to try to keep the sources as internally 
consistent as possible.  I figured a little bit of churn in gcc/ginclude 
(and other directories later on) was worth it if it prevents someone 
from complaining about a file FOO, (licensed under GPLv2) which refers 
readers to the file COPYING, when that file contains a description of 
the GPLv3.

Cheers
   Nick