6815766: LinkedBlockingQueue's iterator can return null if drainTo(c) executes concurrently
Summary: Faster, more correct. Use self-linking trick to avoid gc retention
Reviewed-by: martin, dholmes

6493942: ConcurrentLinkedQueue.remove sometimes very slow
Summary: new algorithm for handling concurrent linked lists
Reviewed-by: martin

Summary: Make firstReader a Thread, not a long
Reviewed-by: martin

Summary: Introduce PROPAGATE waitStatus
Reviewed-by: martin

6800572: Removing elements from views of NavigableMap implementations does not always work correctly.
Summary: Replace use of new TreeSet with new KeySet
Reviewed-by: martin

Summary: Read fields in reverse initialization order
Reviewed-by: martin

Reviewed-by: martin, dholmes, chegar

Reviewed-by: dholmes
Contributed-by: NDoug Lea <dl@cs.oswego.edu>

Reviewed-by: dholmes
Contributed-by: NDoug Lea <dl@cs.oswego.edu>

Reviewed-by: alanb
Contributed-by: NDoug Lea <dl@cs.oswego.edu>

Reviewed-by: alanb
Contributed-by: NDoug Lea <dl@cs.oswego.edu>