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svn:author
V 3
gnn
K 8
svn:date
V 27
2012-01-11T15:00:16.374321Z
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V 256
Fix for PR 138526.

Add the ability for /dev/null and /dev/zero to accept
being set into non blocking mode via fcntl().  This
brings the code into compliance with IEEE Std 1003.1-2001
as referenced in another PR, 94729.

Reviewed by:	jhb
MFC after:	1 week

END