I have removed code that generates + listens to LISTEN/NOTIFY events
for Events + Confirms.

remote_listen.c now functions solely via polling, which we already
knew worked fine, as we have had a polling mode for quite a while in
the 2.0 (e.g. - CVS HEAD) code tree.

http://lists.slony.info/pipermail/slony1-commit/2008-May/002288.html
http://lists.slony.info/pipermail/slony1-commit/2008-May/002289.html

The slon _Restart LISTEN/NOTIFY handling has been left alone, as the
effects are quite independent.  Making sure that *that* is handled
rightly will be left as a further exercise to be handled separately.

Note that we *do* need to revise that, probably to remove the
_Restart; in PostgreSQL 8.4, there will no longer be a pg_listener
table, with the result that some of the usages surrounding the "slon
restart" notification type will break.  

Note Andrew Dunstan's presentation at PGCon:
   <http://www.pgcon.org/2008/schedule/events/107.en.html>
-- 
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"... the open research model is justified. There is a passage in the
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truth, and the truth shall set ye free." -- Dave Dittrich