Fix the GUI file display

[davidrg]

CKW (and Kermit 95) has an undocumented GUI file transfer status dialog which you can enable with set file display gui:

This has a number of issues that need fixing:

• [ ] Its not documented (help set file doesn't mention it)
• [ ] The progress bar doesn't update
• [ ] The transfer rate (CPS) doesn't update
• [ ] The estimated time left doesn't update
• [ ] You can't interact with it at all - it completely locks up the application until the transfer has finished. Likely due to all the work in the GUI thread involved in updating the GUI so rapidly

Would be nice to have this fixed as other solutions all have this feature.

[davidrg]

Looking at the code again, a lot of the stuff for updating the GUI file transfer window is not compiled for the K95G target, only the mysterious KUI target:

https://github.com/davidrg/ckwin/blob/master/kermit/k95/ckuusx.c#L7642-L7646

You can see the GUI dialog working on this page of screenshots from 1997: http://www.columbia.edu/kermit/kuishots.html

I'm not entirely sure why its complied out for K95G - perhaps it was for performance reasons? Maybe the KUI target is/was for testing new features not ready to appear in K95G yet and the ability to turn on this file transfer GUI from k95g is an accident.