  o Minor bugfixes (misc):
    - The amount of total available physical memory is now determined
      using the sysctl identifier HW_PHYSMEM (rather than HW_USERMEM)
      when it is defined and a 64-bit variant is not available.  Fixes
      bug 28981; bugfix on 0.2.5.4-alpha.  Patch from Kris Katterjohn.
