import old base64 method if new not present

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@4842 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Subversion/SubversionClient.py

@@ -200,6 +200,7 @@ try:
     return SubversionClient(**kw).__of__(container)
     
 except ImportError:
+  from zLOG import LOG, WARNING
   LOG('SubversionTool', WARNING,
       'could not import pysvn; until pysvn is installed properly, this tool will not function.')
   def newSubversionClient(container, **kw):