file name is too long for ISDEV, violates windows path lenght max

Change-Id: Id60d1bcf7a05b4e9a4d813d1ac55706448681d58
Reviewed-on: http://review.couchbase.org/28536
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>