More informative error message for incorrect databases

When we declare a node is a child of another node (in a tree)
the code actually checks to see if this is true. When it is
not a child, it prints a warning message to the screen.
Since 2005 this has been "Father __ Child __", which means
so little to anyone that we didn't realize it was even a warning.

Now maybe someone will be motivated to fix the dictionaries!

Richard West rwest@mit.edu

source/RMG/jing/chemUtil/HierarchyTreeNode.java

@@ -117,7 +117,7 @@ public  HierarchyTreeNode(Matchable p_element, int p_depth) {
     public void addChildren(HierarchyTreeNode p_child) throws HierarchyTreeNodeException, InvalidHierarchyRelationException {
         //#[ operation addChildren(HierarchyTreeNode) 
 			if (!(p_child.isSubAtCentralNodes(this))) {
-				String s = "Father " + ((Matchable)(this.element)).getName() + " Child " + ((Matchable)(p_child.element)).getName();
+				String s = "Error in database: " + ((Matchable)(p_child.element)).getName() +" is not actually a child of "+ ((Matchable)(this.element)).getName();
 				System.out.println(s);
 				//throw new InvalidHierarchyRelationException(s);
 			}