moved objects, types, and load_types to top module-level;
updated MANIFEST to current files; fix: skips in objects if ctypes is missing


git-svn-id: svn+ssh://svn.mystic.cacr.caltech.edu/pathos/dill@548 8bfda07e-5b16-0410-ab1d-fd04ec2748df
Merge branch 'master' of https://github.com/uqfoundation/dill