[Yaffs] mv problem

[Charles Manning]

Thanx for the stack trace Sergey. We can only work on technical information, 
not emotions. 

Yes, I was able to reproduce the problem and am trying out a fix. Hopefully 
something in CVS in the next short while.

The problem is due to the check for existing target not being done the same 
with the "rename over" functionality. That means  a rename over works, but a 
regular one does not. ie.

# ls >xx
# ls >yy
rm zz
# mv xx yy     <-- works since yy exists
# mv yy zz     <-- breaks because zz does not.