change version_info format to 5-tuple

gevent/__init__.py

@@ -6,8 +6,11 @@ to provide a high-level synchronous API on top of libevent event loop.
 See http://www.gevent.org/ for the documentation.
 """
 
-version_info = (1, 0, 0)
+version_info = (1, 0, 0, 'dev', None)
 __version__ = '1.0dev'
+# 'dev' in version_info should be replaced with alpha|beta|candidate|final
+# 'dev' in __version__ should be replaced with a|b|rc|<empty string>
+
 
 __all__ = ['get_hub',
            'Greenlet',