RFR (S): 8189355: Cleanup of BarrierSet barrier functions

[Kim Barrett]

> On Oct 18, 2017, at 3:27 AM, Erik Österlund <erik.osterlund at oracle.com> wrote:
> 
> Hi Aleksey,
> 
> New full webrev:
> http://cr.openjdk.java.net/~eosterlund/8189355/webrev.01/
> 
> New incremental webrev:
> http://cr.openjdk.java.net/~eosterlund/8189355/webrev.00_01/

Looks good.