#3272: Eliminate redundant 'should' in DataflowSpec test
Merge remote-tracking branch 'upstream/master'
fix ActorSelection hashCode/equals and ask, see #3287 #3261
AddressTerminated interference in RemoteWatcherSpec, see #3290

* The problem was that published AddressTerminated caused real
  notification of "Other side terminated"
Merge remote-tracking branch 'upstream/master'
work around epoll() bug, see #3176

√: Removing selectNow and select(timeout) from Akka IO config to use only unbounded selects
RK: rebase it onto current master and remove AkkaSelector verbiage
Merge pull request #1392 from akka/wip-3290-RemoteWatcherSpec

AddressTerminated interference in RemoteWatcherSpec, see #3290
removed calls to deprecated Props constructor in java code
remove NullMessage, see #3281
Enable usage of MultiJvm nrOfNodes in cluster StressSpec, see #2787

* Adjustments to StressSpec for testing large clusters
* Performance improvement of mute deadLetters
Quick fix for unreachable exiting, see #3266
Additional tests of ClusterMessageSerializer
Reduce amount of gossip data transferred in idle cluster, see #3279

* When seen same the gossip chat is initated with GossipStatus
  message containing the vclock only
* Remove conversation flag in GossipEnvelope
* Ordinary tell instead of actorSelection when replying
Move barriers of conditional tests in StressSpec, see #2787
fixed indentation
[docs] fix there -> their in two places.
improve logging in {Tcp,Udp}Listener, see #3305

- do not log success message when bind fails
- use real port (and not zero if that was given) in further logging
Merge pull request #1381 from akka/wip-2787-cluster-stress-patriknw

Prepare Cluster StressSpec for heavy testing, see #2787
Remove duplicates in roleMapping, see #3270
Merge pull request #1355 from akka/wip-3176-work-around-epoll-bug-√

 #3176 - Adding an AkkaSelector that will work around the EPoll bug, as ...