fix problem with uncompressed clone and python 2.3.

mercurial/streamclone.py

@@ -40,7 +40,8 b' def walkrepo(root):'
         yield x
     # write manifest before changelog
     meta = list(walk(root, False))
-    meta.sort(reverse=True)
+    meta.sort()
+    meta.reverse()
     for x in meta:
         yield x