RFR 8005704: Update ConcurrentHashMap to v8

[Chris Hegarty]

Mike, Doug,

On 28/05/2013 20:07, Mike Duigou wrote:
> Hi Chris&  Doug;
>
> - I don't feel strongly about the removal of AbstractMap. I don't see this as very likely to cause problems in real world code though there is probably some test code somewhere that assigns CHM to an AbstractMap.

I don't feel strongly about this either, but I think it deserves 
possibly its own bug number and consideration. I have removed it from 
this review request, and will a file a new bug to track it.

> - I am reluctant to deprecate contains(Object) here unless we deprecate it in Hashtable as well. I recognize that this has been a source of errors (https://issues.apache.org/bugzilla/show_bug.cgi?id=48755 for one example). Is it time to deprecate it there as well?

Dito for this, removed from this request and should be revisited separately.

-Chris.