preserve ThreadGroup.threadTerminated in openjdk.pro
preserve ThreadGroup.threadTerminated in openjdk.pro

We call this cleanup method from within the VM for every thread, so we
need to preserve it.

lostdj/avian,lostdj/avian,bigfatbrowncat/avian-pack.avian,lwahlmeier/avian,ucdseniordesign/avian,minor-jason/avian,joshuawarner32/avian,joshuawarner32/avian,lwahlmeier/avian,dicej/avian,lostdj/avian,ucdseniordesign/avian,dicej/avian,minor-jason/avian,joshuawarner32/avian,dicej/avian,bgould/avian,lwahlmeier/avian,minor-jason/avian,lwahlmeier/avian,marcinolawski/avian,MaartenR/avian,ucdseniordesign/avian,MaartenR/avian,bgould/avian,ucdseniordesign/avian,bigfatbrowncat/avian-pack.avian,bigfatbrowncat/avian-pack.avian,bgould/avian,marcinolawski/avian,bgould/avian,MaartenR/avian,bigfatbrowncat/avian-pack.avian,lostdj/avian,dicej/avian,MaartenR/avian,joshuawarner32/avian,marcinolawski/avian,marcinolawski/avian,minor-jason/avian