RFR 8011427 java.util.concurrent collection Spliterator implementations

[Paul Sandoz]

Hi,

This webrev contains updates of java.util.concurrent collections from 166:

  http://cr.openjdk.java.net/~psandoz/tl/JDK-8011427-concur-splits/webrev/

More specifically:

- spliterator implementations (which are tested by the existing spltierator tests).

- various doc updates.

- and other updates that are tricky to separate from the above as continual improvements are made, especially to CopyOnWriteArrayList and ConcurrentSkipListMap.

ConcurrentHashMap, ConcurrentMap and ConcurrentNavigableMap will be dealt with in a separate webrev, as will other aspects of 166.

Most of this code has been in the lambda repo for quite a while (the diff between 166 and lambda is much much smaller than the diff between tl and lambda). This webrev was derived from the lambda code base after first syncing lambda with associated files from 166.

Paul.