8182589: TLS SNI in new Java 9 client is not available
Reviewed-by: dfuchs

8179021: Latest bugfixes to WebSocket/HPACK from the sandbox repo
Reviewed-by: dfuchs

8175814: Update default HttpClient protocol version and optional request version
Reviewed-by: chegar, dfuchs

8164625: Pooled HttpConnection should be removed during close
Reviewed-by: dfuchs, michaelm

8170648: Move java.net.http package out of Java SE to incubator namespace
Reviewed-by: chegar, dfuchs, michaelm, prappo, skuksenko
Contributed-by: Chris Hegarty <chris.hegarty@oracle.com>, Daniel Fuchs <daniel.fuchs@oracle.com>, Michael McMahon <michael.x.mcmahon@oracle.com>, Pavel Rappo <pavel.rappo@oracle.com>, Sergey Kuksenko <sergey.kuksenko@oracle.com>, anthony.vanelverdinghe@gmail.com