[aur-general] AUR upgraded to 2.2.0

[Lukas Fleischer]

The official Arch Linux AUR setup has been upgraded to 2.2.0. For a
short list of changes, read [1].

If you experience problems during login, please also read [2].

Please report any further issues to the AUR bug tracker [3].

[1] https://mailman.archlinux.org/pipermail/aur-dev/2013-March/002469.html
[2] https://mailman.archlinux.org/pipermail/aur-dev/2013-March/002464.html
[3] https://bugs.archlinux.org/index.php?project=2