I fixed most of the type problems, except that I'm not sure how to convert to size_t. Someone suggested to convert with 'n', then check if it's negative and correct. I'll ask the mailing list for better suggestions.

I also noted that running 'hg diff' shows the modifications to 'configure', which I didn't include. This leads me to doubt whether including the modification to 'pyconfig.h' is ok, given that it's generated by 'autoheader'.