1024cores - Non-intrusive MPSC node-based queue

Advantages: + Waitfree and fast producers. One XCHG is maximum what one can get with multi-producer non-distributed queue. + Extremely fast consumer. On fast-path it's atomic-free, XCHG executed per node batch, in order to grab 'last item'. + No need for node order reversion. So pop operation is always O(1). + ABA-free. + No need for PDR. That is, one can use this algorithm out-of-the-box. No need