Fixed prefix loader now properly forward globals.

This fixes #238
diff --git a/CHANGES b/CHANGES
index 94b07bc..6425de5 100644
--- a/CHANGES
+++ b/CHANGES
@@ -5,6 +5,9 @@
 -------------
 (bugfix release, release date to be decided)
 
+- Prefix loader was not forwarding the locals properly to
+  inner loaders.  This is now fixed.
+
 Version 2.7.1
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 (bugfix release, released on August 7th 2013)