[ccache] GPLv3 (was: Release plan)

[tridge at samba.org]

Hi Joel,

 > However, if upgrading, I would also prefer to relicense the "core ccache
 > files", so that the blurb at the top of those files says GPLv3+ to avoid
 > confusion. My understanding is that I need consent from all copyright holders
 > (10-15 people if you count all contributors) to do this. Am I correct? If so,
 > it seems easier to just stick with GPLv2+.

You only need consent if any of the previous contributions did not
have a "or (at your option) any later version" notice.

It is completely up to you, but I would certainly support the change
to GPLv3+. Make sure you keep the "or later" part though (ready for
GPLv4), and update the address information to be the URL as per the
recommended GPLv3 style.

This would be an example header if you decide to do this:

   Copyright (C) Andrew Tridgell                19xx-20xx
   Copyright (C) Joel Rossahl                   2010-2010

   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 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.


Cheers, Tridge