also fixes 3 bugs:
1) mpeg right channel volume was always using the left channel volume, too
2) too high MusicVolume setting was not clamped to 0..200
3) too high SoundVolume setting was not clamped to 0..200
- added methods to CModel3 to access sound board and drive board
- added methods to CSoundBoard to access 68K and DSB (if attached)
- added methods to CDSB1 & CDSB2 to access Z80 & 68K respectively
- small code tweak in DriveBoard.cpp
- comment tweaks in Model3.h & Model3.cpp
- Changed gear shifting behavior: neutral gear has its own button now.
- Removed SUPERMODEL_SOUND.
- DirectInput is the default input system for Windows now.
- Multi-threading is on by default, replaced -multi-threaded w/ -no-threads.
- Made crosshairs larger and more visible.
- Added Nik to co-author list and began updating file copyright notices.
- Fixed Virtua Striker 2 input names (player 2 inputs end with the number 2 instead of 1).
- Added documentation to a Docs/ subdirectory.
- Exported all default input configurations to Supermodel.ini and added that to the repository. Internally, Supermodel initializes all controls to "NONE" now.
- Moved Logger.h to OSD/, cleaned up comments.
- Command line and config file parsing have been rewritten.
- Began replacing C standard library headers with C++ versions (eg. stdio.h -> cstdio). I think I got most of them, but not all.
- CSoundBoard is not derived from CBus.
- Optimized sound board memory handlers (now using switch statements).
- Added DSB emulation (based on R. Belmont's M1 source code).
- Improved ROM loading: only unique ROMs (those not shared amongst games) are used to identify games. The ROM loader will no longer get confused as easily.
- General cleanup here and there, removed unused Render.h file.
