Fix package list inconsistency caused by namespace package on Python 3.5

namespace package will be skipped during installation. Since Python 3.5, .pyo files are removed and new .opt-1.pyc (and .opt-2.pyc) files are introduced [1]. However setuptools does not understand that new naming therefore the corresponding foo.opt-1.pyc is still added into package list (via --record). The inconsistency leads to a packaging error.

[1] https://www.python.org/dev/peps/pep-0488/

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,