NetBSD qemu build fixes

Fix NetBSD build for glusterfs built in qmeu sources

BUG: 764655
Change-Id: I4428a88b1e0d7c5f6740022861ffe230dbbd84bd
Signed-off-by: Emmanuel Dreyfus <manu@netbsd.org>
Reviewed-on: http://review.gluster.org/7815
Reviewed-by: Harshavardhana <harsha@harshavardhana.net>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>