[Ifeffit] XANES peak fitting

[Matt Newville]

Just a short follow up on this and the "bug of the month":

In the current version of Athena, the "Plot Components" and "Plot
Difference" checkboxes on the Peak Fitting Page triggers a similar
"fatal" error to the Ifeffit-Athena connection that effectively hangs
the session.

For now, a possible work-around is to open the "Display Ifeffit
buffer" window and repeatedly type ")"  until the window becomes
responsive.

I'll  work on setting up PerlApp to rebuild athena for windows, but it
may take me a while to get a working version.

--Matt