Conflicts:
akka-actor/src/test/scala/akka/dispatch/ActorModelSpec.scala
project/build/AkkaProject.scala
both resolved by "union" approach
- change wavesOfActors test for CTD: scheduling SHUTDOWN 10000 times does not
work so well...
- add executeFuture with trivial implementation, TBC
dispatcherShouldHandleQueueingFromMultipleThreads tests for possible race
conditions in prohibiting multiple threads running the same actor concurrently
- add some useful methods to akka.util.Switch and fix a typo
- adapt ActorModelSpec not to rely on the Meet message (would not work with
CallingThreadDispatcher)
- add CallingThreadDispatcher