This reverts commit 01fbe7b. __DARWIN_64_BIT_INO_T is a no-op in most cases and might be actively harmful in some others.
Fixes a struct stat size mismatch on 64 bits machines that made Node crash with a EXC_BAD_ACCESS on startup. Solution proposed by Paddy Byers.
Nothing works - no tests. This is just to coordinate efforts between Bert and I.