New method getnamespace.
Since the application never gets to see the namespace abbreviation
used in the XML document, but some applications may need to know them,
we provide this method.
diff --git a/Lib/xmllib.py b/Lib/xmllib.py
index 06b599f..b8422cb 100644
--- a/Lib/xmllib.py
+++ b/Lib/xmllib.py
@@ -222,6 +222,13 @@
             else:
                 i = s + len(str)
 
+    # Interface - return a dictionary of all namespaces currently valid
+    def getnamespace(self):
+        nsdict = {}
+        for t, d, nst in self.stack:
+            nsdict.update(d)
+        return nsdict
+
     # Internal -- handle data as far as reasonable.  May leave state
     # and data to be processed by a subsequent call.  If 'end' is
     # true, force handling all data as if followed by EOF marker.