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AMQP-453: Support Compression

JIRA: https://jira.spring.io/browse/AMQP-453

Add optional compression (gzip, zip) to the `RabbitTemplate` and
`SimpleMessageListenerContainer`.

- MessagePostProcessors
  -- support gzip, zip compression, decompression

- RabbitTemplate
  -- new properties `beforePublishPostProcessor`, `afterReceivePostProcessor`
  -- configure compression on send, decompression on receive

- Listener Container
  -- support decompression

- New Header
  -- `springAutoDecompress`, required for backards compatibility (so we don't decompress existing messages)

- Test cases

Fix Javadocs

AMQP-453 Polishing - PR Comments

- Support customization of the deflating streams
- Support ordered lists of post processors

Revert to Simple Subclasses

- Add support for compression level
- Default compression level is BEST_SPEED

AMQP-453 Add Tests to Verify Level

Refactoring Names
AMQP-453: NPE if no ContentEncoding Property

JIRA: https://jira.spring.io/browse/AMQP-453
AMQP-456: Don't ERROR Log For Passive Declare

JIRA: https://jira.spring.io/browse/AMQP-456

Previously all abnormal channel closes were logged at ERROR level,
even NOT FOUND for passive declarations.
AMQP-451: Change Release to Return Collection

JIRA: https://jira.spring.io/browse/AMQP-451

Change the return type of `releaseBatch` to `Collection` and
rename to `releaseBatches`.