bug#12833: 24.2.50; Avoid questions asked in the echo area to be overridden by messages

[Stefan Monnier]

> 6. Schedule a date from that item with `C-c C-s': the prompt for the
> date gets hidden (for something like 5 seconds) by the "require"
> message (though, that happened before displaying the prompt).

> This is reproducible ever and ever, in the same session.

It shouldn't be 5 seconds, but more like 2 seconds (or rather "whatever
time it takes to display the messages plus setup the minibuffer plus 2s").

IOW this is `minibuffer-message-timeout'.

What behavior would you like to see instead?


        Stefan