Update OSGI Test Suite.
Fix style
Log with info level and not with warn
[#1327] Fix javadoc diagram for new api
SPDY: refactor SpdyHttpDecoder to allow subclasses to access messageMap
Fix for #1313 and #1332

Add TEXTPLAIN in HttpHeaders
Remove all coding/decoding Attribute using URL scheme for name and
attribute
Add text/plain to contant-type
No need to pass the next BufType to the constructor
Fix examples
Try to reproduce #1335 without luck
[#1293] Fix handling of chunked requests in HttpPostRequestEncoder and the multipart examples
[#1293] Fix IllegalBufferAccessException in HttpPostRequestDecoder

* Also let HttpPostRequestDecoder extends Iterator and let its Exceptiosn extend DecoderException
[#1340] Log SslExceptions thrown by SslEngine.closeInbound() with debug level
[#1340] use full url in comment
[#1344] Fix race condition in DefaultChannelPromise / DefaultChannelProgressivePromise which could lead to listeners that are not notified
[#1346] Make sure HttpPostRequestEncoder.nextChunk() return LastHttpContent once all chunks are read
Same fix for Netty V4 for issue #1313

Remove encodeAttribute/decodeAttribute for Multipart element
Replace where necessary by cleanString (to remove '"') on name part (not
on value part)
Correctly handle multipart disposition
Allow to recover from exception triggered by accept() more easily

This is done by stop accept() new sockets for 1 seconds
Beside this this commit also makes sure accept() exceptions of OioServerSocketChannel trigger
the fireExceptionCaught(...). The same is true fo the AioServerSocketChannel.
[maven-release-plugin] prepare release netty-4.0.0.CR2
[maven-release-plugin] prepare for next development iteration