It assures that we can use the same interfaces as the original version(0.5.6).
To support both C++03 and C++11, I introduced msgpack::unique_ptr and msgpack::move() in test codes.
The patch add serialization operator for the given enum to avoid the use
of a cast which leads to strict-aliasing warnings and the test to fail.
Solution suggested by qehgt.
Takatoshi Kondo