small M-o issue

[Andreas Amann]

Hi,

I very much prefer the "old" behavior  (4.5.51) of the M-o key, i.e. opening 
the directory on which you are standing in the other panel, over the new one.
The old behavior was very usefull for getting a quick glimpse of an unknown 
directory tree. 
 
In recent releases (4.6.0) this functionality appears to be gone. I would 
apreciate it,  if it could somehow be reimplemented (using another shortcut 
is of course fine) .

Cheers,

Andreas