So, what do we do?
Good question. a) Fix GUMP so that it can take stuff from a branch. b) Include a Cocoon owned stub. c) Do nothing.
In either case, check http://nagoya.apache.org/wiki/apachewiki.cgi?FOPAvalonization before it goes stale. Send nag mails to Jeremias who promised to do something but buried himself into the licensing stuff instead (which is, admittedly, much more necessary for the next FOP release).
J.Pietschmann