SPDY: add SETTINGS_MINOR_VERSION
Add support for 'charset' property for multipart boundaries

- Fixes #2004
Add XML decoder

- based on @mcaserta's work at https://github.com/netty/netty/pull/1121
- not ready for a merge yet
Fixed the XML decoder
CDATA support
Fix inspector warnings
Rename flushAndWrite() to writeAndFlush()

- Related: #2066
Remove unnecessary check in DefaultPromise.await0()

- Fixes #2032
- Fix inspection warnings
Fix buffer leaks in XmlFrameDecoderTest
Fix another buffer leak in XmlFrameDecoderTest
Fix a bug in SslHandler where a ClassCastException is raised when non-ByteBuf message is passed

- Fixes #1828
Fix a bug where HttpObjectAggregator fails to send a '100 Continue' response

- Fixes #1742
Improve the unit test for #1742
Change the return type of EmbeddedChannel.read*() from Object to an ad-hoc type parameter

.. so that there's no need to explicitly down-cast.

Fixes #2067
Add optimized ChannelOutboundBuffer implementations for the different channels. Related to [#2008]

This includes:
* merge buffers for NioSocketChannel by default. Can be disabled via configuration
* make ChannelOutboundBuffer abstract
* add default implementation of ChannelOutboundBuffer which is usable for most transports