__init__ takes any argument when mapping a class with no __init__

[Mike Bayer]

from sqlalchemy import *
from sqlalchemy.orm import *

class Foo(object):
    pass

try:
    x = Foo('foo')
    assert False
except TypeError:
    assert True

m = MetaData()
t =Table('t1', m, Column('id', Integer, primary_key=True))
mapper(Foo, t)
compile_mappers()

try:
    x = Foo('foo')
    assert False
except TypeError:
    assert True

[Mike Bayer]

a582fe3b2645f4c12221b0dc8940cefffe674a93. had to fix scoped_session mapper extension to clear out kwargs too.

[Mike Bayer]

Removing milestone: 0.4.2 (automated comment)