sipwitch daemon tweaks

src/freedombone

     echo 'EnvironmentFile=-/etc/conf.d/sipwitch' >> /etc/systemd/system/sipwitch.service
     echo 'EnvironmentFile=-/etc/sipwitch.conf' >> /etc/systemd/system/sipwitch.service
     echo 'EnvironmentFile=-/etc/default/sipwitch' >> /etc/systemd/system/sipwitch.service
+    echo 'ExecStartPre=-/bin/rm -f /var/run/sipwitch/control' >> /etc/systemd/system/sipwitch.service
     echo 'ExecStart=/usr/sbin/sipw -f $OPTIONS' >> /etc/systemd/system/sipwitch.service
     echo 'Restart=always' >> /etc/systemd/system/sipwitch.service
+    echo 'NotifyAccess=main' >> /etc/systemd/system/sipwitch.service
     echo '' >> /etc/systemd/system/sipwitch.service
     echo '[Install]' >> /etc/systemd/system/sipwitch.service
     echo 'WantedBy=multi-user.target' >> /etc/systemd/system/sipwitch.service