ENH: for-range, forAllIters() ... in applications/utilities

- reduced clutter when iterating over containers

applications/test/callback/Test-callback.C

@@ -72,7 +72,7 @@ public:
 
     void testCallbackFunction() const
     {
-        forAllConstIter(callbackRegistry, *this, iter)
+        forAllConstIters(*this, iter)
         {
             iter().testCallbackFunction();
         }