fix attrwrapper of an object which becomes dict backed and support non str types

if we get the attrwrapper of an object, then change it to be dict-backed,
the original attrwrapper should remain valid but no longer connected to that object.

test/tests/dict_setting.py

@@ -51,6 +51,19 @@ print hasattr(c, "attr")
 print hasattr(c, "foo")
 print c.__dict__ is d1
 
+c = C()
+a = c.__dict__
+c.__dict__ = c.__dict__
+c.__dict__[u"uni"] = "u"
+c.__dict__[u"\u20ac"] = "u"
+c.__dict__[(1, 2, 3)] = "t"
+print sorted(c.__dict__.keys()), sorted(a.keys())
+print "all non str attributes:", sorted([item for item in dir(c) if not isinstance(item, str)])
+print "can we retrieve unicode attributes by there ascii value?", c.uni, c.__dict__["uni"]
+print "attrwrapper:", a["uni"], a[(1, 2, 3)]
+setattr(c, "uni", 1)
+print "test setattr()", c.uni, c.__dict__["uni"], a["uni"], len(c.__dict__), len(a)
+
 dictproxy = C.__dict__
 print type(dictproxy)
 print "foo" in dictproxy

test/tests/dict_setting_old_dict.py

-# expected: fail
-# - haven't bothered to implement this yet
-
 # Funny case: if we get the attrwrapper of an object, then change it to be dict-backed,
 # the original attrwrapper should remain valid but no longer connected to that object.
 
@@ -13,3 +10,10 @@ c1.a = 1
 print aw.items()
 c1.__dict__ = d = {}
 print aw.items()
+
+c2 = C()
+olddict = c2.__dict__
+c2.__dict__ = { "should not be there" : 1 }
+print olddict.has_key("should not be there")
+
+