CBQE-0:: fix cbtransfer for windows

Change-Id: I44ee654474d3d3c0b3f451982e1c7dba9e2f70aa
Reviewed-on: http://review.couchbase.org/41761
Reviewed-by: Parag Agarwal <agarwal.parag@gmail.com>
Tested-by: Parag Agarwal <agarwal.parag@gmail.com>