(Finally) fix bug #7158 - SMB2 connection resets during IOZone tests from 64-bit...

(Finally) fix bug #7158 - SMB2 connection resets during IOZone tests from 64-bit Vista client

It turns out that the persistent handles are used by the Microsoft
redirector to index files on oplock break requests. So even if we
don't do durable handles (yet) we must set the persistent handle
on create. For now just use the same handle value as we use for
volatile.

Jeremy.