pothos: work on proxy as universally supported in case of failure
pothos-python: moved converters and deleted unused one
pothos-library: serialization support for proxy type
pothos-python: using python marshal for serialize hooks
pothos-java: dummy serialization hooks so it compiles
pothos-python: tweak serialization exception handling
pothos-java: work on serialization hooks
pothos-library: proxy serialization deals with binary data
pothos-java: java serialization uses byte vector for binary - tests pass
Merge branch 'universal_proxy_service'