* 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

* slsReceiver: fill Fifo with 0xff in Listener only for missing packets
* Distinguish between CPUAffinity getNbSystemCPUs and getNbCPUs
* Use std::bitset<64> internally in CPUAffinity