bug#12068: 24.1; customizing debug-on-error to nil disables --debug-init

[Glenn Morris]

Dave Abrahams wrote:

> What do you think people will do when they've set it to non-nil and then
> they get annoyed that they're always dropping into the debugger and
> really want to turn it back off so it sticks?

I recommend "erase customization" rather than toggling.

I don't think it's worth implementing special handling for this
scenario, so I have marked this as "wontfix".