Prepare a new release

buildout.cfg

 [buildout]
 develop = .
 parts = interpreter test
-find-links = http://download.zope.org/distribution/
 
 [interpreter]
 recipe = zc.recipe.egg

setup.py

@@ -17,8 +17,8 @@ import os
 from setuptools import setup, find_packages, Extension
 
 setup(name='Acquisition',
-      version = '2.12.0dev',
-      url='http://cheeseshop.python.org/pypi/Acquisition',
+      version = '2.12.0a1',
+      url='http://pypi.python.org/pypi/Acquisition',
       license='ZPL 2.1',
       description="Acquisition is a mechanism that allows objects to obtain "
       "attributes from the containment hierarchy they're in.",