OS X: Emacs.app / application binary = hard link ... why?

[David Reitter]

Hi,

make-package creates hard links (and symlinks) in an extra bin/ folder 
in the .app bundle:

   # Make the application binary a hard link
    rm $installprefix/../MacOS/Emacs
    ln $installprefix/../MacOS/bin/emacs $installprefix/../MacOS/Emacs

why is this happening?
It looks like that in the installation - via a .pkg package / and an 
.dmg - you end up with three identical, but separate files that each 
take up 15MB.

What is Contents/MacOS/bin for anyways?

If it is needed, can we safely make a symlink instead of a hard link?

Thanks
-- Dave