Windows: use cm_noteLocalMountPointChange whenever fakeDirVersion is changed

Windows: use cm_noteLocalMountPointChange whenever fakeDirVersion is changed

cm_noteLocalMountPointChange() is meant to be used when fakeDirVersion
is changed.  It previously wasn't used because cm_noteLocalMountPointChange()
would obtain the cm_Freelance_Lock.  Now that cm_noteLocalMountPointChange()
can be called while holding the lock, use it everywhere.

LICENSE MIT

Change-Id: I737f4572773a93a656ca0f58e07a55d250c368a1
Reviewed-on: http://gerrit.openafs.org/1888
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>