http-client-branch: (WebSocket) API update

http-client-branch: remove some degenerate test cases from BufferingSubscriberTest

http-client-branch: more debugging, and hopefully a fix, for a FlowTest intermittent failure (ERROR AT END)

http-client-branch: minor doc formatting

http-client-branch: (WebSocket) builder change

http-client-branch: review comment asFileImpl sneaked into the API

http-client-branch: more precision for GET() in HttpRequest.Builder

http-client-branch: more precision for headers in HttpRequest.Builder

http-client-branch: minor doc formatting in HttpRequest

http-client-branch: moved noBody() to HttpRequest.BodyPublisher

http-client-branch: better diagnosis of expected exceptions

http-client-branch: minor doc tweaks in HttpRequest

http-client-branch: typo in HttpClient.java

http-client-branch: minor doc tweak in HttpClient.java

http-client-branch: adding time information to BufferingSubscriberTest.java

http-client-branch: merge

http-client-branch: (WebSocket) the builder is immutable now

http-client-branch: minor doc change

http-client-branch: (WebSocket) immutable builder copy; illegal headers;

http-client-branch: minor doc change

http-client-branch: minor doc change

http-client-branch: HttpClient uses ProxySelector.getDefault() by default

http-client-branch: merge

http-client-branch: Update copyright years in tests

http-client-branch: Update copyright years

http-client-branch: Add a test for CONTINUATION frame handling

http-client-branch: spec clarifications and minor fix to sendXXX methods

http-client-branch: Cleanup unneeded buffer instance variable from Http1Exchange

http-client-branch: Add some more logging to sun.net.httpserver.ServerImpl

http-client-branch: remove cookieMan

http-client-branch: CookieManager -> CookieHandler

http-client-branch: fix test post trailers removal

http-client-branch: remove unimplemented response trailers

http-client-branch: minor spec edits in HttpClient.Builder

Merge

http-client-branch: fix SmokeTest to use the correct client

http-client-impl: drop usage of ByteBufferReference temporarily. Using it properly requires changing FlowTube to work with List<BBR> or BBR[] instead of List<BB>. May be added back later if there is a performance gain.

http-client-branch: common URLPermission paths

http-client-branch: fix for failing ConnectionPoolTestDriver

http-client-branch: (cleanup)

Simplify Epsilon barrier set after BS cleanup

Merge

http-client-branch: (cleanup)

http-client-branch: (cleanup)

http-client-branch: make SSLTube connect to SocketTube using FlowTube::connectFlows

http-client-branch: added test for JDK-8164941

http-client-branch: (cleanup)

http-client-branch: removed AsyncConnection interface and associated methods in subclasses

http-client-branch: remove test that tests removed class

http-client-branch: fixed failing Http1HeaderParserTestDriver.java

http-client-branch: (cleanup) unused imports, unused methods, removed 1 class; typos;

http-client-branch: more test scenarios for RequestBuilderTest

http-client-branch: HPACK.Logger uses DebugLogger

http-client-impl: use Reference.reachabilityFence to make clear the websokect BuilderImpl must stay strongly referenced until after the WebSocketImpl is created.

http-client-branch: additional Header test scenarios

http-client-branch: fix test policy file