go to parent directory with backspace

[Jabba Laci <jabba laci gmail com>]

Hi,

In Total Commander there is a very handy feature: with backspace you
can quickly jump to the parent directory. It'd be nice if this feature
were added to MC too. If the bottom command line is empty and
backspace is pressed, it could be interpreted this way.

Or is there another shortcut for going back to parent? Pressing Home +
Enter is 2 keys :)

Thanks,

Laszlo