Message 57693 - Python tracker

I believe it is safe to drop all the _EXPORTS macros (MMAP_EXPORTS,
WINSOUND_EXPORRTS etc) from all projects; atleast I cannot see any
reason for having them. Some are clearly bogus, e.g. unicodedata and
test_capi both define MMAP_EXPORTS, _socket defines WINSOUND_EXPORTS,
and _ssl defines _SOCKET_EXPORTS.