bug#44347: mingetty --no-clear is hard-coded

[Jesse Gibbons]

The --no-clear option is hard-coded for mingetty, with no documentation 
about why. The mingetty page says,
       --noclear
              Do not clear the screen before prompting for the login 
name (the
              screen is normally cleared).

I do not think I am alone in preferring the screen cleared after logout. 
I also think it could be a security issue. For now my workaround is to 
include a call to "tput reset" or "clear" in my .bash_logout script, but 
that has to be configured for every user and requires more packages 
installed either at the system level or per-user.

I think this is an "easy for beginners" issue. I would fix it myself, 
but I have a lot of other stuff to do.