Switching the internal editor between byte and UTF-8 mode

[Roland Illig]

Hi,

in recent discussions, there has often been the question whether the 
editor should be converted to UTF-8, and indeed, many Linux 
distributions have chosen to patch mc so that it does. I would at least 
like to keep the possibility of editing plain binary files, so I suggest 
to add a new option to the editor configuration where you can swap 
between byte-mode and UTF-8 mode.

I currently don't have time to implement it, it's just that it would be 
nice to have. :)

Roland