Add ability to daemonize sstpd

[deba12]

it will be very useful if you add knob for daemonize the daemon :)
using screen is some how quirky

[sorz]

You may use systemd or supervisor.

I prefer systemd, just create a sstpd.service file located in /etc/systemd/system

[Unit]
Description=SSTP server daemon.

[Service]
Type=simple
ExecStart=/usr/local/bin/sstpd -c ...

then,

# systemctl enable sstpd
# systemctl start sstpd

and view the log

$ journalctl -u sstpd

[deba12]

I will try it
thanks