Implementation of new generificationified writer functionality

util/src/main/java/org/jf/util/CollectionUtils.java

@@ -79,6 +79,7 @@ public class CollectionUtils {
         for (T element1: it1) {
             T element2;
             try {
+                // TODO: would checking hasNext be more efficient?
                 element2 = elements2.next();
             } catch (NoSuchElementException ex) {
                 return 1;