This is the farsight version of Google's libjingle as distributed by
Freedesktop.org. It's required by gst-plugins-farsight.
Google's Libjingle (http://code.google.com/apis/talk/index.html) is Google
Talk's implementation of Jingle and Jingle-Audio (proposed extensions to
XMPP) to interoperate with Google Talk's peer-to-peer and voice calling
capabilities.