2207c45 PR#5568: add O_CLOEXEC flag to Unix.openfile, so that the returned

Authored and Committed by Xavier Leroy 10 years ago
    PR#5568: add O_CLOEXEC flag to Unix.openfile, so that the returned
    file descriptor is created in close-on-exec mode.
    
    
    git-svn-id: http://caml.inria.fr/svn/ocaml/version/4.01@13961 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
    
        
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