http-client-branch: inconsistent synchronization of PushGroup

http-client-branch: incorrect protected field in final class

http-client-branch: fix serializable fields in internal ALPNException

http-client-branch: fix mutable byte[] references

http-client-branch: (WebSocket) example-test

http-client-branch: (WebSocket) test

http-client-branch: long lines in ServerPushWithDiffTypes

http-client-branch: (WebSocket) tiny spec simplification + test

http-client-branch: honor legacy jdk.http.auth.* property when handling proxy-authorization

http-client-branch: update debugging output in SplitResponse

http-client-branch: (WebSocket) test rename

http-client-branch: (WebSocket) tests

http-client-branch: expand FlowAdapterSubscriberTest with mapping using convenience handlers

http-client-branch: only add h2 ALPN if TLSv1.2 or greater

http-client-branch: (WebSocket) A test for onClose & IllegalStateException

http-client-branch: (WebSocket) consistent method names in test

http-client-branch: (WebSocket) rearranged methods in tests

http-client-branch: (WebSocket) more tests

http-client-branch: fix issue in SSL flow delegate when handshake error occurs during unwrap

http-client-branch: changed default protocol version when plain http over proxy requested.

http-client-branch: merge with default

http-client-branch: make it possible to supply proxy-authorization headers

http-client-branch: SequentialScheduler cleanup

http-client-branch: add api/impl notes to WebSocket onClose

http-client-branch: restore inadvertantly removed @FunctionalInterface

http-client-branch: clean up and expand push promise tests

http-client-branch: Import of 8195823: Buffers given to response body subscribers should not contain unprocessed HTTP data

http-client-branch: MinimalFuture deep obtrusion

http-client-branch: renamed PushPromiseHandler.withPushPromises into PushPromiseHandler.of

http-client-branch: 8194729: Java 9's HttpClient doesn't allow custom 'Authorization' headers