RFR 8078645: removeIf(filter) in ConcurrentHashMap removes entries for which filter is false

[Paul Sandoz]

Hi

Please review:

  
http://cr.openjdk.java.net/~psandoz/jdk9/JDK-8078645-ConcurrentMap-views-removeIf/webrev/

These updates are already in the 166 repo.

The documentation update to the class of ConcurrentMap is going through CCC. I 
took the liberty of also cleaning up some smaller doc errors on ConcurrentMap 
as made in the 166 repo.

Thanks,
Paul.