Re: [PATCH] test-lib.sh: Add explicit license detail, with change from GPLv2 to GPLv2+.

> This file has had no explicit license information noted in it, but
> has clearly been created and modified according to the terms of GPLv2
> as with the rest of the git code base.
> 
> The purpose of relicensing is to allow other GPLv3+ projects (in
> particular, the notmuch project: http://notmuchmail.org) to use this
> same test-suite structure (and to contribute changes back as well).
> 
> The request for relicensing was presented to the git community in:
> 
> 	Message-ID: <871vgmki4f.fsf@steelpick.localdomain>
> 
> and explicitly agreed to by Junio C Hamano, Sverre Rabbelier, Johannes
> Schindelin, Pierre Habouzit, and Johannes Sixt.