Free cursor positioning.

[Oleksandr Gavenko]

Some user ask me how configure Emacs to move cursor in any position
like this done in editor of Far file manager.

So if you press RIGHT at the end of string cursor move right not to next 
string and so on. If you type any char after the end of line
editor automatically add spaces from the end of line up to inserted new
char.

This useful for those who like rectangle command because to mark
the rectangle:

  line 1 short
  line 2 toooooooooooooo looooooooong
  line 3 short

you need type spaces after 'short' to include tooo looong.