FF4 - Snapshot

- Added encode/decode Att methods.  Necessary if description is to be an
  attribute, which will be quoted.

src/rewrite/Att.h

@@ -57,6 +57,10 @@ public:
   bool required () const;
   bool internal () const;
 
+private:
+  void encode (std::string&) const;
+  void decode (std::string&) const;
+
 private:
   std::string mName;
   std::string mValue;