New delay and echo commands

[Matthias Granberry]

I was tinkering with the GRUB last night and couldn't find a command to 
cause a short delay or timeout of some sort.  After looking through the 
source, I wrote this small patch to add a delay and "echo" function.

After using it for a short time, I'm tempted to change it to a 
countdown-style command with a prompt and a visible countdown like the 
menu timeout, but I don't see any acceptably simple way to do it.

Matthias

grub-echo+delay.diff
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