* Curses I/O functionality is relatively untested, but it appears to have
  its "gotchas" in djgpp with PDCurses 2.4. djgpp itself supports Borland
  conio, so my 32-bit DOS build uses that instead.

* My 32-bit binary is built without  zlib.  Otherwise, it is identical to
  the 16-bit binary.

* Where DZIP deviates from the Standard:
  = No Unicode support yet.  (I don't have the guts to add it.  I'll wait
    for someone to add it to JZip and copy the code from there.)
  = Optional switch to make status bar appear like certain Infocom non-PC
    interpreters and ITF/INF, and make the Z3 screen clear to top, as did
    all the Apple and C64 interpreters that I have tested, rather than to
    bottom, as the Standard dictates (-x).
  = GEM version uses default interpreter 14 (undefined).