dselect install times out screensaver

[Bill Mitchell <mitchell@mdd.comm.mot.com>]

The screensaver times out during the dselect install processing
done after initial 0.93R6 install.  I forget how to twiddle it,
but perhaps it'd be useful for the initial install script to
disable the screensaver during the initial dselect run, and
reinstate it afterwords.  It'd probably be even better for dselect
to disable the screensaver before dropping out for the [I]nstall
processing, and restore it when done.

mitchell@mdd.comm.mot.com (Bill Mitchell)