x50ng

[gwh]

My found hobby of refactoring old C code has claimed another victim: x49gp.

So here's x50ng

My main motivation was to rewrite/refactor the GUI to

1. make it scalable (both the LCD display and the text on the keyboard)
2. port it from obsolete gtk+-2 to gtk+-3 (today) and later gtk4
   

In line with x48ng and saturnng I also ported the command-line parameters to use getopt_long and introduced the use of lua to store options in a config.lua file.

There's also minor tweaks in assigned keys, etc. Nothing major.

All original capabilities of x49gp should remain fully functional, including newRPL and grayscale support.

Finally screenshots:
and the man page : man 5 x50ng