[issue12040] Expose a Process.sentinel property (and fix polling loop in Process.join())

[Antoine Pitrou]

Changes by Antoine Pitrou <pitrou at free.fr>:


----------
resolution:  -> fixed
stage: patch review -> committed/rejected
status: open -> closed

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12040>
_______________________________________