Resolve #42: Add Binding for Apache CXF

This PR is quite huge ...
1. The Binding for Apache CXF has been added. 
2. The SOAP header marshalling for the MDC content was not able to deal with special characters or white spaces in the 'key'. Due this issue we've changed the handling of SOAP headers in all ways - ***THIS VERSION IS NOT BACKWARD COMPATIBLE REGARDING SOAP HEADERS!!***
3. Some smaller refactorings to JaxWS binding are included.

The new marshalling/unmarshalling mechanism uses JAXB and handles all character issues for us.