* Only one processing thread, move packet processing
  to Camera readRecvPackets and assemblePackets
* Remove Recv helper class in Jungfrau

* Port to new Detector & Receiver API
* Enable gap pixels through Receiver patch
* Implement put/getCmd through sls_detector_put/get
* Extend SystemCmdPipe::wait to recover output,
  add execute for commands without input

* Remove recv/port processing code

* Move Receiver::Thread to Model::Recv::Thread
* Remove FrameMap::Item::Group/Follower/FrameQueue
* Block Receiver::Port threads while Model::Recv::Thread work
* Support arbitrary number of threads, distribute with ThreadBalance
* Remove ExpandInThreads

* Move NetDev management to NetDevRxQueueMgr
* Separate one RecvCPUAffinity per recv, move setter code to Receiver
* Use Pipe dupInto/restoreDup for redirecting I/O in SystemCmd