Issue #110: add TDShellFsToSimpleComposedFsMvCpCommandTests ... not passing yet ... checkpoint before making experimental bugfixes
Issue #110: get TDShellFsToSimpleComposedFsMvCpCommandTests tests to pass ... involves a little double dispatching for move, since filesystem move involves a `copy and remove` and object based guys can do a `remove and add` and avoid an object copy