+ FrameFlusher "close" frames are detected during
enqueue and sets the state properly for failing
other frames after it
+ Moving away from Blockhead(Client|Server) to using actual implementations
+ Moved tests to /jetty-websocket-tests/ to be able to use actual impl
for both sides of testcase (client and server)
+ Corrected FrameFlusher terminate/close to not fail the close frame
itself, but only frames that arrive AFTER the close frame.
+ Moving WebSocketCloseTest to jetty-websocket-tests to avoid
using BlockheadClient / BlockheadServer in testing
+ Cleanup of unnecessary modifiers on interface
+ Logging error if @OnWebSocketError is undeclared
+ IOState removed
+ New ConnectionState tracks connection basics in a simpler
method then IOState did.
+ No tracking of Remote close initiated (not needed)
+ IncomingFrames.incomingError() removed
+ Session delegates to Connection for all state changes
+ Errors can be communicated to application multiple times
+ Close is only communicated once
Signed-off-by: Joakim Erdfelt <joakim.erdfelt@gmail.com>