SpoutAPI compiles with Netty 4

Signed-off-by: Jack Huey kitskub@gmail.com
Spout compiles with Netty 4.

Untested

Signed-off-by: Jack Huey kitskub@gmail.com
Spout runs with Netty 4

Signed-off-by: Jack Huey kitskub@gmail.com
Simplify this.

Fix that.

Signed-off-by: Jack Huey kitskub@gmail.com
Release buffers before allowing them to be GC'ed

Signed-off-by: Jack Huey kitskub@gmail.com
Merge branch 'netty4'