Merge Distutils.Extra changes for automating translation message catalog compilation

babel.cfg

@@ -1,2 +0,0 @@
-[python: **.py]
-

setup.py

@@ -19,9 +19,17 @@
 import os
 import subprocess
 
-from setuptools import setup, find_packages
+from setuptools import find_packages
 from setuptools.command.sdist import sdist
 
+try:
+    import DistUtilsExtra.auto
+except ImportError:
+    print >> sys.stderr, 'To build nova you need https://launchpad.net/python-distutils-extra'
+    sys.exit(1)
+assert DistUtilsExtra.auto.__version__ >= '2.18', 'needs DistUtilsExtra.auto >= 2.18'
+
+
 from nova.utils import parse_mailmap, str_dict_replace
 from nova import version
 
@@ -75,7 +83,7 @@ try:
 except:
     pass
 
-setup(name='nova',
+DistUtilsExtra.auto.setup(name='nova',
       version=version.canonical_version_string(),
       description='cloud computing fabric controller',
       author='OpenStack',