Update setup.py so that data files are installed

README

@@ -6,6 +6,13 @@ The configuration file is designed to be compatible with OpenDKIM, but only
 a subset of OpenDKIM options are supported.  If an unsupported option is
 specified, an error will be raised.
 
+This package includes a default configuration file and man pages.  For those
+to be installed when installing using setup.py, the following incantation is
+required because setuptools developers decided not being able to do this by
+default is a feature:
+
+python setup.py install --single-version-externally-managed --record=/dev/null
+
 WARNING: This is an alpha grade release to support interoperability testing with
 Ed25519 signatures and basic functionality.  It is known to be incomplete and
-not suitable for general use.
+not suitable for general use.

setup.py

@@ -17,6 +17,7 @@
     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA."""
 
 from setuptools import setup
+import os
 
 description = "Domain Keys Identified Mail (DKIM) signing/verifying milter for Postfix/Sendmail."
 
@@ -46,12 +47,10 @@ setup(
             'dkimpy-milter = dkimpy_milter.__init__:main',
         ],
     },
-    package_data={'dkimpy_milter': [
-        'etc/*',
-        'man/*',
-    ]},
+    include_package_data=True,
+    data_files=[(os.path.join('share', 'man', 'man5'),
+        ['man/dkimpy-milter.conf.5']), ('etc', ['etc/dkimpy-milter.conf'])],
 
     install_requires = ['dkimpy', 'pymilter', 'authres>=1.0.2'],
-
     zip_safe = False,
 )