Don't look in the parents of a class if the init constructor is redefined and super is not called

[pylint-bot]

Originally reported by: Claudiu Popa (BitBucket: PCManticore, GitHub: @PCManticore?)

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The following code shows that if a member is not found in the current class, it will be looked into the parent, even though the __init__ was changed and the parent's init wasn't called.

#!python

from astroid.test_utils import extract_node
n = extract_node('''
class A(object):
   def __init__(self):
      self.value = 42
   def __add__(self, other):
      return other.value + self.value / 2
class B(A):
   def __init__(self):
      self.value1 = 24
   def __radd__(self, other):
      return NotImplemented
A() + B()
B().value
''')
print(repr(n))
inferred = next(n.infer())
print(next(inferred.igetattr('value')).value)

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• Bitbucket: https://bitbucket.org/logilab/astroid/issue/156