hotplug/NetBSD: honour XEN_RUN_DIR

Store xldevd.pid under XEN_RUN_DIR. Note that this will change the
default location from /var/run to /var/run/xen.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>

tools/hotplug/NetBSD/rc.d/xendriverdomain.in

@@ -19,7 +19,7 @@ start_cmd="xendriverdomain_startcmd"
 stop_cmd="xendriverdomain_stop"
 extra_commands=""
 
-XLDEVD_PIDFILE="/var/run/xldevd.pid"
+XLDEVD_PIDFILE="@XEN_RUN_DIR@/xldevd.pid"
 
 xendriverdomain_precmd()
 {