Bug#219558: autopartkit: dies with SIGFPE on some HW

[Petter Reinholdtsen <pere@hungry.com>]

retitle 219558 Crashes when asked to do simple partitioning
thanks

The problem is not with special hardware, it was with the standalone
profile in Skoleliniux.  It is triggered by simple partition table
specification.  This fail:

  /          default       800   5120
  swap       swap          2*$RAMSIZE 2*$RAMSIZE'

While this work:

  /          default       800   5120
  /usr       default       512   5120
  swap       swap          2*$RAMSIZE 2*$RAMSIZE'

The only difference was adding one non-root partition which made the
partitioning succeed.