This reverts commit 95112586.

Perhaps when fsck is done

Send them only when glab cannot boot within 2 minutes.

The box makes annoying high frequency noise :-(

- Cleanup = move more complex calculation from RT thread to processing
  thread.
- Negative result happened what message TX time was greater than
  timestamp difference. This can happen if first timestamp is delayed
  and the second not.

- Do not run ifup scripts. They restart openssh server and if this
  happens too often, systemd marks it as failed.
- Output newly added out_of_range statistics
- Use bc to compare floating point "$avg" - otherwise, there is a
  warning. Also use herestring syntax (<<<) available in bash and zsh.

Note: booting from flash still doesn't work

- Syntax highlighting in editors now show latester related shell commands
- don't exit (due to set -e) if latester fails

Ignoring is useful for transfering binary files.

This is needed when run.pl is run under timeout utility. It sends the TERM
signal to the children.

Linux commit 5d2acfc7b974bbd3858b4dd3f2cdc6362dd8843a changed the meaning
of make allnoconfig, so we have to enable CONFIG_TTY manually. Maybe more
options are necessary - with this, kernelgw test runs.

One second was too small.

It is not sufficient to always answer no. The "choice" question needs
Enter or a number. We answer with Enter.