Request for Review (s) - 8149343: assert(rp->num_q() == no_of_gc_workers) failed: sanity

[Kim Barrett]

> On Mar 16, 2016, at 6:42 PM, Jon Masamitsu <jon.masamitsu at oracle.com> wrote:
> 
> The change to re-initialize _next_id passed testing so is now
> the proposed fix.
> 
> Delta from original fix:
> http://cr.openjdk.java.net/~jmasa/8149343/webrev_delta.00_01/
> 
> Full fix version 01
> http://cr.openjdk.java.net/~jmasa/8149343/webrev.01/

This seems to have dealt with the _next_id issue, but the other issues from my initial review are still there.