- add missing patch to fix packaging

noted by and ok sturm@

devel/py-zopeinterface/patches/patch-setup_py

@@ -0,0 +1,11 @@
+$OpenBSD: patch-setup_py,v 1.1 2008/04/02 11:04:49 eric Exp $
+--- setup.py.orig	Tue Apr  1 22:42:06 2008
++++ setup.py	Tue Apr  1 22:42:25 2008
+@@ -35,7 +35,6 @@ except ImportError, e:
+ 
+ else:
+     extra = dict(
+-        namespace_packages=["zope"],
+         include_package_data = True,
+         zip_safe = False,
+         tests_require = ['zope.testing'],