Do you mean like an autobackup that restores the game if it crashes? Or a savegame that can be restored if you die?

If it's the latter, I'm not exactly sure how giving people an option to savescum as much as they want, and making it very convenient to do so is exactly a method for preventing save scumming.

I think he means that there should be a restriction on how often you can save. So if you load a game, you can't save and quit until a certain amount of turns has passed.

How can this help? You will still be able to backup saves.
Yeah, I've heard a guy that killed a balor for about a day in real time, saving each successful turn.
But this is just a perversion. Most savescummers are just newbies that want to see what's there further. They do not need to save often.

I think it should just auto-save every time you change maps or if you are below 25% health, that way it would be pretty hard to 'cheat'. I know a lot of that comes down to self control, but this might lessen the likelihood.

Yes, I meant exactly that.

What would happen instead? The game says "No sorry, you may not exit this application." ? If I sit down to play some ADOM and then get a call and need to leave the house, am I then forced to either leave my computer on, burning precious electricity (and coal to generate that electricity) or let my precious ADOM character die permanently a quitter's death?

The solution to save scumming lies with the user. If you want to cheat, then cheat. If not, then don't. The programmer has already done his part.

I did plenty of save scumming when I was first trying to learn the game. And now I don't. The anti-save scumming technology didn't change; I did. If you feel the desire to make backup copies of your game, then DO IT and don't feel bad. Your perspective may change in time, or it may not, and that's fine.