Allow setuptools 0.7 to satisfy use_setuptools.

--HG--
branch : distribute

CHANGES.txt

@@ -2,6 +2,13 @@
 CHANGES
 =======
 
+------
+0.6.44
+------
+
+* ``distribute_setup.py`` has been updated to allow Setuptools 0.7 to
+  satisfy use_setuptools.
+
 ------
 0.6.43
 ------

distribute_setup.py

@@ -144,6 +144,15 @@ def use_setuptools(version=DEFAULT_VERSION, download_base=DEFAULT_URL,
     try:
         try:
             import pkg_resources
+
+            # Setuptools 0.7b and later is a suitable (and preferable)
+            # substitute for any Distribute version.
+            try:
+                pkg_resources.require("setuptools>=0.7b")
+                return
+            except pkg_resources.DistributionNotFound:
+                pass
+
             if not hasattr(pkg_resources, '_distribute'):
                 if not no_fake:
                     _fake_setuptools()