RFR: Temporarily disable ThreadLocalHandshakes with Shenandoah

[Aleksey Shipilev]

On 02/22/2018 01:25 PM, Roman Kennke wrote:
> I just checked why sh-conc-mark does not suffer the same problem.
> There, we init the liveness arrays at top of mark loop, and flush it
> at the end. This way, we can never get a mismatch of workers. We
> should just do the same:
> 
> http://cr.openjdk.java.net/~rkennke/init-extra-liveness/webrev.02/

Wrong RFR thread, but patch looks good.

-Aleksey