replace embedded JMX Client with jmxsh, see #3461

- rewire the akka-cluster shell script to make use of jmxsh-R5.jar
Tweaked drop policy to be less aggressive on the other system
remove obsolete verbiage from ScalaDoc of actorOf, see #3463
Setup tests with atmos tracing
sbt-multi-jvm 0.3.6
Update atmos test configuration to trace testActors
Added comment
Test was not using the view from the fresh system #3460
Make Make Cluster.joinSeedNodes public, see #3468
Merge pull request #1555 from akka/wip-3461-cluster-client-∂π

replace embedded JMX Client with jmxsh, see #3461
Merge pull request #1557 from akka/wip-3463-actorOf-doc-∂π

remove obsolete verbiage from ScalaDoc of actorOf, see #3463
Merge pull request #1556 from drewhk/wip-tweak-apt-stresstest-drewhk

Tweaked AkkaProtocolStressSpec drop policies
Merge pull request #1553 from akka/wip-atmos-tracing

atmos tracing
Merge pull request #1560 from akka/wip-3468-joinSeedNodes-public-patriknw

Make Make Cluster.joinSeedNodes public, see #3468
Merge pull request #1561 from drewhk/wip-3460-unreachablejoinsagain-wrong-view-drewhk

Test was not using the view from the fresh system #3460
fix stupid bug in LARS, see #3467

When switching the enqueueing logic to use the actual time instead of
the current tick number (which had been the purpose of the whole
rewrite) I managed to make the same mistake I did half a year ago again:
enqueueing into the same slot that has just been processed needs to
subtract one round while enqueueing into the slot that is about to be
processed MUST NOT DO THIS.

There was another bug in there related to differences between tick
number and actual time and remaining ticks of the task. I hope that the
code is now clear and simple enough as to be actually correct. As usual,
all tests passing.
Merge pull request #1562 from akka/wip-LARS-2.1-∂π

fix stupid bug in LARS
Merge remote-tracking branch 'upstream/master'