akka/akka — pull request #560 by patriknw (2012-06-25 19:37:08+00:00)
Title: Join seed nodes before becoming singleton cluster, see #2267

* self is initially not member (in gossip state)
* if the join to seed nodes timeout it joins itself, and becomes
singleton cluster
* remove the special case handling of singelton cluster in gossip
merge, since singleton cluster is not the normal state when joining
any more