Get bdist_wheel working under Windows on Appveyor

Author: brandon-rhodes

setup.py

@@ -1,7 +1,14 @@
 import os
+import sys
 from distutils.core import setup, Extension
 from glob import glob
 
+# Work-around.
+
+if 'bdist_wheel' in sys.argv:
+    del setup, Extension
+    from setuptools import setup, Extension
+
 # Read the current version from ephem/__init__.py itself.
 
 path = os.path.join(os.path.dirname(__file__), 'ephem', '__init__.py')