Review request: 8012687: Remove unused is_root checks and closures

[Thomas Schatzl]

Hi,

On Fri, 2013-04-19 at 13:46 +0200, Stefan Karlsson wrote:
> http://cr.openjdk.java.net/~stefank/8012687/webrev.00/
> 
>  From bug description:
> There's an unused parameter named is_root that is passed down to a 
> number of MarkSweep/ParOld closures. This enhancement suggests that we 
> remove it and cleanup the trails after it.

  looks fine.

Thomas