[Ifeffit] Inequivalent sites and multiple shell fits

[Paul Fons]

Wow.  An interesting discussion has started.  I am afraid my original 
question was not very clear (my fault).  I just wanted to be sure that 
athena (diana) was doing the "right thing", e.g adding the 
contributions from separate feff calculations, e.g. treating them as 
incoherent sums where the phase information is not preserved. In 
retrospect, it seems obvious that it must be doing so, but in a moment 
of doubt I dashed off a quick email.  Thanks for the help.