8168535: Quarantine GcCauseTest02 and GcTest02 Reviewed-by: jwilhelm, sjohanss

8168283: adlc: fix error expanding expanded nodes. Reviewed-by: kvn

8167300: Scheduling failures during gcm should be fatal Reviewed-by: kvn, mcberg

8167298: assert(tp->base() != Type::AnyPtr) crash with Unsafe.compareAndExchangeObject* Summary: Unsafe.compareAndExchangeObject should keep track of returned type after matching Reviewed-by: shade, vlivanov