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)