[Wocky] Openfire bug and patch

[Alejandro R. Sedeno]

Openfire has a bug with how it treats some groupchat messages. If a
groupchat message contains both a subject and a body, the fact that it
contains a subject triggers the subject change code. If the subject was
already the current subject of the conference, the message is silently
dropped.

XEP-0045 specifies that subject changes are groupchat messages with a
subject and no body, so the silent drop behavior is a bug. It also
completely breaks barnowl's use of the subject as a replacement for
zephyr's instances.

I reported the issue upstream earlier today, and JM-1144 was filed
against it.

http://www.igniterealtime.org/issues/browse/JM-1144

The problem was quickly resolved in the openfire svn. (r9289) The patch,
extracted from svn, can be found in my Public at:

/mit/asedeno/Public/OpenfireMucSubject.patch
http://web.mit.edu/asedeno/Public/OpenfireMucSubject.patch

Can this patch be applied to our installation of Openfire?

Thanks,
-Alejandro