write Permission error for unionfs (CD) files

[Stephen Samuel <samuel@bcgreen.com>]

as Knoppix, I can (for example) do:

echo *.debug /tmp/debug > /etc/syslog.conf

This isgnores the file permissions on syslog.conf.  Once the first change
is made (and the file is now being fetched from the ramdrive), further
writes fail unless I really do have proper permission.  

This only seems to happen for files that exist and are sourced from
the CD.

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Stephen Samuel +1(604)876-0426                samuel@bcgreen.com
		   http://www.bcgreen.com/~samuel/
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