#5 xcgroupsrv patch, enabled to log to syslog

[Junji Sato]

This patch enables to log joining/leaving message with
syslogd. The
logged message is written in both joining to group and
leaving from
group. In this patch, syslog facility uses "local0",
and syslog level
uses "info". If you need to log these messages, you
must edit
to syslogd.conf.

This patch is based on xcgroupsrv.cgi in
xcast6-0.1.2-xcgroup.tar.gz.

[Junji Sato]

xcgroupsrv.cgi.0.diff