Hi,

I had a look at this code since installing the Chronology classes required  
similar gymnastics not to break the image.

1. It would be nice to know soem background which motivated these changes.
2. The selector AssociationTests>>testtReadOnlyAssocEquality is misspelt.
3. Some of the tests use abbreviated names, some don't.
    For readability for Those Who May Follow Us, raname methods like  
testReadOnlyAssoc to
    testReadOnlyAssociation.
4. Could these three .cs files not be bundled into one changeset ?
5. Do we really need ReadOnlyVariableBinding ?

I tested this in 3.9alpha-6548. All ok.