RFR: 8222968 ByteArrayPublisher is not thread-safe resulting in broken re-use of HttpRequests

[Michael McMahon]

Could I get the following change reviewed please:

The change is as suggested in the report and the test case
is based on the one provided.

http://cr.openjdk.java.net/~michaelm/8222968/webrev.1/index.html

Thanks,
Michael.