Analysis of return values does not work with forward references #294

Properties.py:

class A(object):
    def methodA(self):
        return 's'

class B(object):
    def getA(self):
        return self.propA

    @property
    def propA(self):
        return A()

Code:

x = B().getA().methodA()

x is nothing. This is b/c after AST walker processes class it processes functions in queue order and property propA is not yet known when return type of getA is analyzed.

Code needs to use delayed resolution or relocation tables.