PyPy: PyCode_GetNumFree() got fixed in PyPy 2.0-beta1
Add copy constructor for Status
Add copy constructor for Group
Add copy constructor for Datatype
Add copy constructor for Errhandler
Add copy constructor for Info
Add copy constructor for Op
Prepare to use @cython.internal in the near future
merged in Lisandro's changes. Still haven't figure out how to rebase so I don't show up in the log