Booting MACH on a macintosh requires two things.
  1) The Mach control panel.  Mach_f contains the MPW sources.
  2) A kernel with a ramdisk.  "make ramdisk" builds one of these.
  3) A bootable control panel and ramdisk kernel, Mach.Hqx

The objects in /usr/src/boot/mac2 are:
Mach.Hqx   -- Mach control panel binary with a ramdisk kernel
Mach_f.Hqx -- sources to Mach control panel
Mach_f     -- unpacked sources
