akka/akka — pull request #15194 by drewhk (2014-05-14 10:31:09+00:00)
Title: +str Various cleanups of internal streams architecture

Round 1:
- Factored out input and output receive blocks using a switchable PartialFunction
- reduced surface of ActorProcessorImpl
- removed lazy vals of TransferStates
- somewhat cleaner shutdown process
- robustified some of the tests