[#1876] Make use of proper state machine in WebSocket08FrameDecoder for performance reasons
use enum for state in EmbeddedChannel
use enum for state in LocalChannel
Fix checkstyle
[#1885] Correctly close leak detected also on non started HashedWheelTimer
disable debugging output during test
[#1881] Use correct field name in NullPointerException
Implementing the Binary Memcache Protocol for Netty.

This changeset implements the full memcache binary protocol spec, including
a first batch of tests. Ascii protocol and more coverage and helper classes
will follow.