Add optimized stream/buffer transfer methods
Add optimized stream/buffer transfer methods

xnio/xnio,fl4via/xnio,xnio/xnio,fl4via/xnio,panossot/xnio,panossot/xnio,kabir/xnio,kabir/xnio,dmlloyd/xnio,stuartwdouglas/xnio