bug#22975: 25.0.92; CANNOT_DUMP build can't start in tty mode

[martin rudalics]

>>   > In tty mode, the CANNOT_DUMP version get stuck in a loop at startup
>>   > complaining that internal-echo-keystrokes-prefix isn’t defined.  If I
>>   > set a breakpoint on Fsignal, it’s first complaining about
>>   > window--resize-root-window-vertically when trying to display the long
>>   > load path, presumably terminating the processing of loadup.el;
>>
>> Can you please try adding a placeholder function like Paul did with
>> Fframe_windows_min_size and Fwindow__sanitize_window_sizes.
>
> How can we know what these placeholders should do, without seeing
> which code calls them?

The idea was that if Ken's assumption is right that complaining about
window--resize-root-window-vertically terminates the processing of
loadup.el, then such a placeholder function (that would do nothing)
would have allowed it to proceed ...

martin