[Ifeffit] New release (061) of my codes -- Macintosh 10.4 binary installer

I have updated the binary installer for Mac OS 10.4 to include the latest horae (061). There should hopefully be no problems. To simplify some problems that have occurred in the past, the installer now refuses to work if the /usr/X11R6 folder is not present (e.g. if X11 is not installed). If there are any problems, please let me know. Paul p.s. Matt, the links on the ifeffit home page point to an old installer. The newer (mac) installer now has the horae version incorporated into its name, the latest being "ifeffit-1.2.8- Mac10.4_horae61_pkg.dmg"