Remove comments that don't apply anymore and review language on others

src/main/java/org/javarosa/core/model/instance/TreeReference.java

@@ -306,31 +306,22 @@ public TreeReference anchor(TreeReference baseReference) throws XPathException {
  }
 
  public TreeReference contextualize(TreeReference contextRef) {
- //TODO: Technically we should possibly be modifying context stuff here
- //instead of in the xpath stuff;
  if (!contextRef.isAbsolute()) {
  return null;
  }
 
- // I think contextualizing of absolute nodes still needs to be done.
- // They may contain predicates that need to be contextualized.
-
  TreeReference newRef = anchor(contextRef);
  // unclear...
  newRef.setContext(contextRef.getContext());
 
  //apply multiplicities and fill in wildcards as necessary based on the context ref
  for (int i = 0; i < contextRef.size() && i < newRef.size(); i++) {
-
- //If the the contextRef can provide a definition for a wildcard, do so
+ //If the the contextRef can provide a definition for a wildcard (not currently supported by JR), do so
  if (TreeReference.NAME_WILDCARD.equals(newRef.getName(i)) && !TreeReference.NAME_WILDCARD.equals(contextRef.getName(i))) {
  newRef.data.set(i, newRef.data.get(i).setName(contextRef.getName(i)));
  }
 
  if (contextRef.getName(i).equals(newRef.getName(i))) {
- //We can't actually merge nodes if the newRef has predicates or filters
- //on this expression, since those reset any existing resolutions which
- //may have been done.
  if (newRef.getPredicate(i) == null) {
  List<XPathExpression> predicate = contextRef.getPredicate(i);
  newRef.addPredicate(i, predicate);