Add a few more tests to TestConcurrentChanges
Add a few more tests to TestConcurrentChanges

git-svn-id: 3f5c6d78ff0be2386f5eccc3304aa879623f5ca8@9027 7b3f36aa-e6db-49c1-8b4c-66eac1997e64

chris-armstrong/CoreObject,chris-armstrong/CoreObject,etoile/CoreObject,etoile/CoreObject,etoile/CoreObject,chris-armstrong/CoreObject,etoile/CoreObject,chris-armstrong/CoreObject