Windows: fail if pSrcParentObject cannot be resolved

In AFSSetFileLinkInfo and AFSSetRenameInfo return STATUS_INVALID_PARAMETER
if pSrcParentObject cannot be determined.  Otherwise, a NULL pointer
dereference will occur.

Reviewed-on: http://gerrit.openafs.org/9807
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 4512b47be83d708f4dfe6e45a205653635658c23)

Change-Id: If0b2824569a1195a861c183df7c0468f87384b61
Reviewed-on: http://gerrit.openafs.org/9815
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Windows: Reset CM_VOLUMEFLAG_RO_SIZE_VALID flag

The CM_VOLUMEFLAG_RO_SIZE_VALID flag was being reset using the
wrong field which resulted in the flag never being cleared and
the correct volume size not being reported.

Reviewed-on: http://gerrit.openafs.org/9805
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit e11da4c5869a0534b7767e2566d4743bc7e8189e)

Change-Id: I25f7123e2dd763b122e04bb5faaf213f6f21c294
Reviewed-on: http://gerrit.openafs.org/9816
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>