[Flexradio] v. 1.3.8 keyboard tuning not working

[Dale Boresz]

I've been mapping the ALT-Right Arrow, ALT-Left Arrow, ALT-Up, and 
ALT-Down to tune up in 100 Hz steps, tune down in 100 Hz steps, tune up 
in 10 Hz steps, and tune down in 10 Hz steps, respectively.

These mappings no longer work on version 1.3.8 of the console. I can't 
make any other mappings work with the ALT key either.

73, Dale WA8SRA