Description of problem:
If you use the callback binary, 2 more log files (not catched by
"/var/log/mgetty.log.tty*") are used:
1) /var/log/mgetty.log.unknown
2) /var/log/mgetty.log.callback

Examples:
1) /var/log/mgetty.log.unknown
07/05 21:36:57  using stdin for dial out, tty=/dev/ttyS0
07/05 21:36:57  logging continues in file /var/log/mgetty.log.callback

2) /var/log/mgetty.log.callback
07/05 21:36:57  detaching from ctty...
07/05 21:36:58   delaying 21 seconds
07/05 21:37:19   cbfd: search ttys '/dev/ttyS0'
...
...


Version-Release number of selected component (if applicable):
1.1.28-6

How reproducible:
Always

Steps to Reproduce:
1. Use mgetty's /usr/sbin/callback