Gadu-Gadu protocol update and patch

[tsalacinski at gmail.com]

> If someone creates an account for me (or I can dig up my old account
> and it is still active), I can do some rudimentary testing to make
> sure it still logs in in Windows, but I can't necessarily test it all
> that thoroughly.
>
> Does the patch effectively revert the in-tree libgg code to a
> "vanilla" 1.8.2 version?
>
> -D
>

The Gadu-Gadu patch - yes, it reverts the whole libpurple's libgadu to
vanilla 1.8.2.

It is _NOT_ required though for other patches to work.