games/woof: Update to 7.0.0

Woof! 7.0.0
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- Options loaded from a PWAD are now disabled in the menu instead of
  merely skipped (@rfomin).
- Trim trailing spaces off the demo footer.
- OPL emulation based on Nuked OPL3 Version1.8 has been ported over
  from Chocolate Doom.
- Avoid namespace clash with the time symbol, e.g. on SmartOS.
- Use unambigious integer types in the BMP screenshot saving code.
- The Alt-Tab bug workaround has been extended to SDL 2.0.16 (@rfomin).
- The actual sample frequency is now fed back into snd_samplerate config
  variable.
- Native Windows MIDI support has been implemented, replacing
  woof-midiproc (@rfomin).
- The demo_version value is now logged in P_SetupLevel().
- Don't change MUSINFO music if nomusicparm is set (@rfomin).
- Fix wrong generalised door sounds (@rfomin).
- Fix the Boom elevators movement interpolation (@rfomin).
- Enable cosmetic compatibility options for all complevels, i.e.
  comp_blazing, comp_doorlight and comp_skymap (@rfomin).
- Next level key also skips the current demo (@rfomin).
- cmake: always unzip SDL2 binaries in build directory (@melak47).
- Fix M_PAUSE graphics location in hires mode (@rfomin).
- Make keyed doors flash on the automap, ported over from Crispy Doom
  (@rfomin).
- Keep the map static in overlay mode if not following the player.
- Implement DSDHacked support (@rfomin).
- Fix the dehacked string replacement behavior (@rfomin).
- Fixed a bug in DeHackEd string replacements with a length of exactly
  four (@JadingTsunami).
- Add comp_voodooscroller, MBF21 v1.3 update (@rfomin).
- Demo features (@rfomin).
    - If a new game is started during demo recording, start a new demo.
    - Add key to finish demo recording.
    - Count spawned monsters
    - Add demo file name suffix counter, rngseed is generated before
      restart recording.
- Use SDL functions to load a WAV lump (@rfomin).

(micha)