Bug#856439: fakeroot doesn't detect and handle message queue and semaphore id collision

[Martin Dorey]

I've had a failure with the same symptom from a patched build.  I see a flaw in 
my patch that could lead to it closing the same id twice if it has to retry 
twice - I should have reset the ids after cleanup().  I don't see how that 
could explain the remaining issue.  Perhaps there's something else in the 
system randomly removing message queue ids.  That sounds like fun to track down 
:(.