Merged in sunpoet/setuptools (pull request #158)

Fix package list inconsistency caused by namespace package on Python 3.5

setuptools/command/install_lib.py

@@ -79,6 +79,8 @@ class install_lib(orig.install_lib):
         base = os.path.join('__pycache__', '__init__.' + imp.get_tag())
         yield base + '.pyc'
         yield base + '.pyo'
+        yield base + '.opt-1.pyc'
+        yield base + '.opt-2.pyc'
 
     def copy_tree(
             self, infile, outfile,