[#1595] Fix IllegalStateException thrown by HttpObjectEncoder when an empty HttpContent was written
Fix data structure corruption and resource leak in ChannelOutboundBuffer
Make sure all write attempts made after a channel is closed are marked as failure
Fix test failure
Fix checkstyle
Fail unflushed writes with ClosedChannelException

... instead of cryptic exception message.
Less confusing leak warning message
Improve the HttpPostRequestDecoder and so make it configurable when it will discard read bytes to prevent OOM
[maven-release-plugin] prepare release netty-4.0.2.Final
[maven-release-plugin] prepare for next development iteration
Merge remote-tracking branch upstream/$:{upbranch}