add systemd startup files

src/xlxd.default

@@ -0,0 +1,4 @@
+# This is used by xlxd.service
+REFLECTOR="XLX000"
+BIND_IP="192.168.1.1"
+AMBED_IP="127.0.0.1"

src/xlxd.service

@@ -0,0 +1,18 @@
+[Unit]
+Description=XLXD Multiprotocol Reflector
+After=network.target ambed.service
+Before=mmdvm_bridge
+
+[Service]
+Type=forking
+User=root
+Group=root
+EnvironmentFile=/etc/default/xlxd
+ExecStart=/xlxd/xlxd ${REFLECTOR} ${BIND_IP} ${AMBED_IP}
+ExecStartPost=/bin/sh -c 'umask 022; pgrep xlxd > /var/log/xlxd.pid'
+ExecStartPost=/bin/sleep 30
+Restart=on-abnormal
+PIDFile=/var/log/xlxd.pid
+
+[Install]
+WantedBy=multi-user.target