Updated external class Services_Libravatar to version 0.2.1 and replaced deprecated functions.
This class is under MIT License.
Included libravatar.tgz
Avatar addon to look up avatars at Libravatar. Libravatar is a free and open replacement for Gravatar and you can also host it on you own server. This addon only provides the lookup of avatars at Libravatar. It requires PHP >= 5.3 and you need to disable the gravatar addon.
Tobias Diekershoff
Zach Prezkuta
Klaus Weidenbach