[Ifeffit] Stealth mac installer upgrade

Horae was making zero length files when asked to save graphics info. This was due to a broken build of pgplot (there are issues with the source as downloaded). I fixed the problems and have rebuilt the latest mac version of horae and included it in the file: ifeffit-1.2.8-Mac10.4_horae61a_pkg.dmg which is available for download from sourceforge.net as of now. It works for me anyway I should say! Let me know of any problems. A functional X11 (free on the 10.4 installation disks) is required for horae to work.