printing file is wrong

[Jaymon]

# file1.py

from file2 import String

s = String("foo")
pout.v(s)

# file2.py

class String(str):
    def __str__(self):
        pout.h()
        return self

when you run file1.py it will print:

here 6 (file1.py:6)

instead of:

here 5 (file2.py:5)

[Jaymon]

This issue was interesting, what the entry frame detector was doing was trying to find the last time the pout/__init__.py file was called in the frame stack, well, this series of events had an interesting frame stack because:

1. pout.v(s) was called
2. While in the pout.v(s) call, when pout was getting the string representation of s then pout.h() was called
3. The frame stack then had two chains of pout/__init__.py calls broken up with calls to file1.py and file2.py but the frame finder always went until it found the last pout/__init__.py call, which was pout.v(s)