[DGD] Version 0.55

[Raymond Jennings]

Hopefully I ironed out all the kinks in object/upgrade management this time.

This time I also fixed a bug that was causing destructor handling to be
messed up.

Now, objects should properly have their destructors called.

Unless a destruct is being forced via ObjectD (such as when a module is
being force shutdown), in which case destructors should NOT be called.

By the way, anyone got advice on what features/directions to take this
project?

git://github.com/shentino/kotaka v0.55