Bugfix: stdin fd (0) being ignored by node.File.
Bugfix: stdin fd (0) being ignored by node.File.

In the case of stdin options.fd is 0, which is considered false, therefore fd
gets set to null intead of 0.
http://groups.google.com/group/nodejs/msg/80849f6aa0b0eaa0

dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,isaacs/nshtools,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node