increasing number of replicas for an existing in topic

[Paul Mackles]

In 0.8, is there an undocumented way to increase the number of replicas for an 
existing topic? We created a number of topics with the wrong number of 
replicas. We could just delete and recreate but delete is flaky in 0.8. Was 
hoping someone figured out a way to do this w/out deleting the topics.

Thanks,
Paul