=doc,sam RecoveryCompleted handled by receiveRecover typo
Upgrade to Mockito 1.9.5 (closes #15493)
Merge pull request #15486 from whiter4bbit/master

RecoveryCompleted handled by receiveRecover
Merge pull request #15494 from hseeberger/wip-15493

=pro #15493 Upgrade to Mockito 1.9.5
preparation for asynchronous DNS resolution
fixes after review, including: better .conf organization, dynamicAccess instead of Class.forName, immutable Seq's
made a simple TTL cache and used it in TcpOutgoingConnection
removed implicit usage of ActorContext, made DnsProvider implementation a class instead of object for Java interop, switched to nanoTime() to avoid clock jumps, cancelling a timer when stopping manager actor, moved channel registration code from message handler to a plain method
built SimpleDnsCache upon immutable collections