[pypy-issue] Issue #2920: stat_result is missing st_birthtime (on OSes/FSes where that's a thing) (pypy/pypy)

[Julian Berman]

New issue 2920: stat_result is missing st_birthtime (on OSes/FSes where that's a thing)
https://bitbucket.org/pypy/pypy/issues/2920/stat_result-is-missing-st_birthtime-on

Julian Berman:

E.g., macOS + HFS on CPython:


```
#!terminal

~
⊙  /usr/bin/python -c 'import os; print os.stat("/usr/bin/python").st_birthtime'                                                                                                                                                                                               Julian at home
1540378051.0

~
⊙  pypy -c 'import os; print os.stat("/usr/bin/python").st_birthtime'                                                                                                                                                                                                          Julian at home
Traceback (most recent call last):
  File "<module>", line 1, in <module>
AttributeError: 'stat_result' object has no attribute 'st_birthtime'
```