[GRASS5] [bug #1370] (grass) r.los should show progress

this bug's URL: http://intevation.de/rt/webrt?serial_num=1370
-------------------------------------------------------------------------

Subject: r.los should show progress

Platform: GNU/Linux/i386
grass obtained from: Mirror of Trento site
grass binary for platform: Compiled from Sources
GRASS Version: 5.0pre1

Because r.los takes such a long time for large areas,
it should send out occasional progress reports to the
screen so we know it is not stuck in a loop, etc.

For instance, d.rast makes many messages to the screen while
drawing, even thouht it just takes seconds. Why not a few
messges from r.los?

-------------------------------------------- Managed by Request Tracker