Unix functionality expected by python but missing from CodeWarrior
runtime system.
diff --git a/Mac/errno_unix.h b/Mac/errno_unix.h
new file mode 100644
index 0000000..00fbe5a
--- /dev/null
+++ b/Mac/errno_unix.h
@@ -0,0 +1,18 @@
+
+#define ENOTDIR (-120)
+#define EACCES (-54)
+#define EEXIST (-48)
+#define EBUSY (-47)
+#define EROFS (-44)
+#define ENOENT (-43)
+#define ENFILE (-42)
+#define EIO (-36)
+#define ENOSPC (-34)
+
+#define ESRCH 3
+#define EINTR 4
+#define EBADF 9
+#define ENODEV 19
+#define EINVAL 22
+#define EMFILE 24
+