Added logic to get copied ZClasses to be accessed through their

containers. This is necessary to satisfy expectations of python-script
security machinery.

lib/python/ZClasses/27.txt

@@ -12,7 +12,8 @@ Let's make sure we can load old ZClasses:
     >>> from Zope2.ClassFactory import ClassFactory
     >>> db.classFactory = ClassFactory
     >>> conn = db.open()
-    >>> ac = conn.root()['Application'].ac
+    >>> app = conn.root()['Application'] 
+    >>> ac = app.ac
     >>> ac.eek()
     'xxx'
     >>> ac.y = 2

lib/python/ZClasses/ZClass.txt

@@ -71,7 +71,7 @@ Let's commit our changes:
     >>> import transaction
     >>> transaction.commit()
 
-We can access the class in another connection. We'll ise an explicit
+We can access the class in another connection. We'll use an explicit
 transaction manager so that we can use the second connection without
 creating a separate thread:
 
@@ -107,8 +107,11 @@ We can copy instances:
     >>> c3 is app.c2.aq_base
     False
 
-    >>> c3.eek()
+    >>> app.c3 = c3
+    >>> app.c3.eek()
     '******************************************'
 
+But the copies share a common class:
+
     >>> c3.__class__ is app.c2.__class__
     True