Fixed systemctl disable command in preun section
    Replaced reload by restart, dropped ExecReload from sendmail.service
    Resolves: rhbz#719931
    Switched to systemctl in NetworkManager dispatcher script
    Added ExecStartPre=-/etc/mail/make to sm-client.service
    Hardcoded daemon option (-bd) to sendmail.service, dropped the DAEMON var
    QUEUE var in /etc/sysconfig/sendmail replaced by SENDMAIL_OPTS var
    Added default preset (-q1h) to SENDMAIL_OPTS var