Bug#120125: grub: update-grub could have an option to lock older kernels

[Gürkan Sengün]

Hi

> What do you mean by lock older kernels?

So if someone gets to the menu he can't boot an older kernel,
together with the password option. Menu entries get a "lock" line entry.

That's good for multiuser systems where people have physical access
to the computers (can power them off/on) and use an older kernel
security issue to gain access to things they shouldn't have access to.

Yours,
Gürkan