- if log file cannot be fopened, do not allow logfd to become a NULL   pointer.  For now, panic instead to avoid inexplicable segfaults.
- if log file cannot be fopened, do not allow logfd to become a NULL
  pointer.  For now, panic instead to avoid inexplicable segfaults.

marmolejo/bochs-zet,marmolejo/bochs-zet,marmolejo/bochs-zet,marmolejo/bochs-zet,marmolejo/bochs-zet