Bump buidlroot version to 2018.02.6

bsp/buildroot/package/lighttpd/S50lighttpd

@@ -2,15 +2,21 @@
 #
 # Starts lighttpd.
 #
+NAME=lighttpd
+DAEMON=/usr/sbin/$NAME
+PID_FILE="/var/run/$NAME.pid"
+CONF_FILE="/etc/$NAME/$NAME.conf"
+
+[ -r /etc/default/$NAME ] && . /etc/default/$NAME
 
 start() {
 	printf "Starting lighttpd: "
-	start-stop-daemon -S -q -p /var/run/lighttpd.pid --exec /usr/sbin/lighttpd -- -f /etc/lighttpd/lighttpd.conf
+	start-stop-daemon -S -q -p $PID_FILE --exec $DAEMON -- -f $CONF_FILE
 	echo "OK"
 }
 stop() {
 	printf "Stopping lighttpd: "
-	start-stop-daemon -K -q -p /var/run/lighttpd.pid
+	start-stop-daemon -K -q -p $PID_FILE
 	echo "OK"
 }
 restart() {