get operator.c to compile

Haven't got `import operator` to work yet, but I did get operator.c to compile.

Seems like operator.c requires unicode to be enabled, so I brought in unicodeobject.h, made `unicode_cls`, and added `Py_USING_UNICODE` to pyconfig.h (I think it's suppose to go here?)

Then I had to define a bunch more functions to get the thing to compile, but they're just unimplemented shells right now.