RFR: jsr166 jdk10 integration wave 3

[Doug Lea]

On 09/27/2017 02:38 PM, Paul Sandoz wrote:
>> Looks good, i just need to look a little more closely at the ConcurrentSkipListMap changes.
>>
> 
> 
>  328      * Note that, with VarHandles, a boolean result of
>  329      * compareAndSet must be declared even if not used.
> This should not be necessary, since for such methods the return is not polymorphic. Did you observe some performance or code generation issues?
> 

It was necessary at the time I started rewriting this in June,
but apparently not now. I'll get rid of the annoying unnecessary
declarations. Thanks to whoever fixed this!

-Doug