[issue16991] Add OrderedDict written in C

[Eric Snow]

Eric Snow added the comment:

> I'm getting the following linker errors on Windows 8.1 for 32 and 64 bit debug and release builds.  unresolved external symbol _PyODict_Type in C:\cpython\PCbuild\_collectionsmodule.obj, and _PyODictIter_Type,
> _PyODictValues_Type, _PyODictKeys_Type,_PyODictItems_Type in C:\cpython\PCbuild\object.obj

Hmm.  I'm not too familiar with how things work for Windows.  I'm also
not clear on where the leading underscore is coming from.

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<http://bugs.python.org/issue16991>
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