Added process priority and affinity for v2 benchmarks
Added process priority and affinity for v2 benchmarks

evgenekov/protobuf-csharp-port,evgenekov/protobuf-csharp-port,happydpc/protobuf-csharp-port,plutoo/protobuf-csharp-port,evgenekov/protobuf-csharp-port,evgenekov/protobuf-csharp-port,plutoo/protobuf-csharp-port,plutoo/protobuf-csharp-port,plutoo/protobuf-csharp-port,happydpc/protobuf-csharp-port,happydpc/protobuf-csharp-port,happydpc/protobuf-csharp-port