Introduce proprietary Compress-Transformation for Encryption / Decryption
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                 Key: WSS-386
                 URL: https://issues.apache.org/jira/browse/WSS-386
             Project: WSS4J
          Issue Type: Sub-task
            Reporter: Marc Giger
            Assignee: Marc Giger
            Priority: Minor
             Fix For: 2.0


Compressing encrypted content (as usually done on transport layer) is not very 
efficient but plain XML is.

Numbers:
soap-doc-encrypted-not-compressed.xml = ~19M
soap-doc-compressed-on-transport.gz = ~ 15M
soap-doc-compressed-before-xml-encryption.xml = ~1.1M

The advantages are:
- Factor n less data on the wire
- Faster processing on both side because much less data must be 
encrypted/decrypted (depends on encryption/compression algorithm)

Disadvantages:
- Proprietary
- Introduces new attack-vector and will be disabled by default for WSS with the 
introduction of secure-processing

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