Closing files after fork

[Hal Murray]

> Can somebody give me a lesson in why a program should close all it's
> descriptors? We can clean up a lot of crufty code if we drop that. 

Nobody responded to my request, so I'll assume it isn't needed and start 
working on deleting it.

In hindsight, I'm surprised that Eric didn't remove it ages ago.  (Or add a 
comment about why it is necessary.)




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