use newer distribute_setup.py

CHANGELOG

@@ -2,6 +2,7 @@ Changes between 2.2.1 and 2.2.2.dev
 ----------------------------------------
 
 - make monkeypatch more robust against intermediate dict/env deletions
+- use distribute_setup script defaulting to 0.6.24 if no setuptools is installed
 
 Changes between 2.2.0 and 2.2.1
 ----------------------------------------

distribute_setup.py

@@ -46,7 +46,7 @@ except ImportError:
             args = [quote(arg) for arg in args]
         return os.spawnl(os.P_WAIT, sys.executable, *args) == 0
 
-DEFAULT_VERSION = "0.6.19"
+DEFAULT_VERSION = "0.6.24"
 DEFAULT_URL = "http://pypi.python.org/packages/source/d/distribute/"
 SETUPTOOLS_FAKED_VERSION = "0.6c11"