Contionuation of 1 time variable patch

Now we have almost 100% of the transaction variables hosted on the
new schema. Variable modifcators (count and exclusion) are not yet
supported on the new schema. Notice that setvar is now using the
parser.

src/variables/xml.h

@@ -38,7 +38,7 @@ class XML : public Variable {
 
     void evaluateInternal(Transaction *transaction,
         Rule *rule,
-        std::vector<const collection::Variable *> *l) override;
+        std::vector<const collection::Variable *> *l);
     std::string m_plain;
 };