vos: Improve release recovery on timed-out trans

vos: Improve release recovery on timed-out trans

When a portion of 'vos release' takes long enough that a transaction
on one or more RO sites times out, it retries to release to those
sites. However, it does not take into account the situation where the
transaction on the original RO clone has also timed out, which it
usually will have if we took a long time to get to the ForwardMulti
stage for any reason.

Add a check to see if the clone RO transaction has timed out, and if
so, recreate the transaction on it. Check if the volume appears to
have changed at all, and if it has, bail out.

Reviewed-on: http://gerrit.openafs.org/2726
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit d8e382df39aa5a92950a1219002a85e5457d8a97)

Change-Id: I19541800fa7d1ce1c5922b9338b4b8370151fd93
Reviewed-on: http://gerrit.openafs.org/3781
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>