[Bf-python] Matrix length incorrect

[Stéphane SOPPERA]

> How about change this to return the number of rows and add a .size()
> method that works like len() does now?
>   
According to:
http://docs.python.org/ref/sequence-types.html

"...__len__(      self)
    Called to implement the built-in function len(). Should return the 
length of the object, an integer >= 0."

So I think __len__ should still returns the number of elements as a 
single integer and size method returns a tuple (nbCols,nbRows) (or 
nbRows,nbCols).
That would seems more logical to me.

Regards,
Stéphane