Always import ndt and use relative import.

Author: skrah

dynd/nd/__init__.py

@@ -1,4 +1,4 @@
-import dynd.ndt
+from .. import ndt # ensure that the module is loaded first
 import sys
 import os
 
@@ -77,4 +77,4 @@ def load_dynd_dll(rootpath):
 
 del os
 del sys
-del dynd.ndt
+del ndt