GAE Adapter ignores applying dynamic properties to a referenced class.

[nick]

An pseudo code example:

class Author(db.Model):
    name = db.StringProperty()

class Novel(db.Model):
    title = db.StringProperty()
    author = db.ReferenceProperty(Author)

a = Author(name='Jane Austen')
a.put()

b = Novel(title='Sense and Sensibility', author=a)
b.put()

del a, b

x = Novel.all().filter('title = ', 'Sense and Sensibility').get()
foo = [1, 2, 3]

x.author.bar = foo
k = str(x.key())

y = pyamf.decode(pyamf.encode(x)).next()

assert y.author.bar == foo

[nick]

The adapter will now fetch the referenced object through the parent attribute rather than querying the data store directly.

[thijs]

Looks good to me and the  buildslave, please merge.