Change licence to GPL + OpenSSL exception

The fine people at Collabora would like to enhance GTimeLog with web-based applications that use SSL.

Pierre-Luc Beaudoin wrote:
> Python uses OpenSSL for the encryption part. Unfortunately, OpenSSL's
> license is incompatible with GNU GPL.
> http://en.wikipedia.org/wiki/Openssl#Licensing
>
> Fortunately there is a solution, which is used by some other GPL
> applications. Relicense GTimelog as "GNU GPL with the OpenSSL special
> exemption." wget and climm are notable user of that license. That
> exception means that we'd have to advertise that SSL functionality is
> provided by OpenSSL.
>
> Do you think GTimelog contributors would agree to such a change?

I myself am fine with this. The other code contributors at this time are:

* people who sent me patches by email (and I can find their emails in my mail archives, if Google fails)

  Thom May
  Dafydd Harries
  Ignas Mikalajūnas (my ex-coworker, I can get hold of him easily)
  Gaute Amundsen
  Chris Beaven

* people who attached patches to Launchpad bugs (and you can probably find out how to contact them by searching for bugs with the 'patch' tag)

  Harald Friessnegger
  Rodrigo Daunoravicius

Somebody ought to get their permission for the licence change.