purple-facebook-0.9.3-c9b74a765767

Fixes groupchat join errors

• Send orca-formatted user agent for all HTTP requests too. Fixes "Failed to parse thread information" errors when joining channels.

This is in addition to the connection error fixes mentioned in the previous release that happened earlier today. Quoting from the previous release:

It fixes connection errors after facebook discontinued support for old versions of facebook messenger for android. While most of the protocol implementation was already above that version, there was a subtle change that broke fetching of sync_sequence_id, and the previously empty MQTT user agent string is now considered an old version too. See ticket #306

Windows users: get the latest build from the usual place: https://github.com/dequis/purple-facebook/wiki/Installing-on-Windows