Fix for bug273

Do not force the event provider to be part of the providers
unless we don't find any provider at all otherwise.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=slony1-engine.git;a=commitdiff;h=e2a8348c76a46cda8b847bacd8af589ec549e47c

Modified Files
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src/slon/remote_worker.c |   66 ++++++++++++++++++++-------------------------
1 files changed, 29 insertions(+), 37 deletions(-)