Fix bustage. gcc dosn't like function-results used as non-const argument.

extensions/transformiix/source/base/NamedMap.cpp

@@ -263,7 +263,7 @@ void NamedMap::put(const String& key, TxObject* obj) {
  * @param key the key of the Object to remove from the NamedMap
  * @return the Object being removed
 **/
-TxObject* NamedMap::remove(String& key) {
+TxObject* NamedMap::remove(const String& key) {
 
     // compute hash for key
     long hashCode = hashKey(key);

extensions/transformiix/source/base/NamedMap.h

@@ -125,7 +125,7 @@ public:
      * @param index the position in the NodeSet to remove the Node from
      * @return the Node that was removed from the list
     **/
-    TxObject* remove(String& key);
+    TxObject* remove(const String& key);
 
     /**
      * Sets the object deletion flag. If set to true, objects in