8206471: Race with ConcurrentHashTable deleting items on insert with cleanup thread
Summary: Only fetch Node::next once and use that result.
Reviewed-by: hseigel, dholmes
8206954: Test runtime/Thread/ThreadPriorities.java crashes with SEGV in pthread_getcpuclockid
Summary: Run the new runtime/jni/terminatedThread/TestTerminatedThread.java test in othervm mode
Reviewed-by: alanb, mikael