Test syslogd logging to a tty which belongs to a user. This is
done with a utmp entry for a pty fake login. All messages are read
from the pty and written into a log file.

Grep for new error messages about tls_connect_socket. Libtls now
reports handshake failed. Make bufsize tests more reliable.

Test that syslogd can process 8 full size messages from sendsyslog(2)
or UDP socket or UNIX domain socket at once.