Use libuv unref() while waiting for new requests.
Use libuv unref() while waiting for new requests.

Lacra17/stronglink,shaunstanislaus/stronglink,Lacra17/stronglink,feld/stronglink,btrask/stronglink,guiquanz/stronglink,feld/stronglink,iOSCowboy/stronglink,Ryezhang/stronglink,nkatsaros/stronglink,feld/stronglink,yamingd/stronglink,nkatsaros/stronglink,shaunstanislaus/stronglink,guiquanz/stronglink,rmoorman/stronglink,shaunstanislaus/stronglink,btrask/stronglink,btrask/stronglink,rmoorman/stronglink,guiquanz/stronglink,iOSCowboy/stronglink,Ryezhang/stronglink,iOSCowboy/stronglink,Lacra17/stronglink,nkatsaros/stronglink,Ryezhang/stronglink,yamingd/stronglink,btrask/stronglink,rmoorman/stronglink,yamingd/stronglink