Updated patch for DOSBox release 0.74:
- added support for all the analog emulation modes (new option mt32.analog)
- reduced audio latency - now it adds 32 millisecond delay when rendering in a separate thread
- no longer show "Using default reverb" message on DOSBox console
- other minor cleanup
Cleaned up DOSBox-mt32-patch:
- separate MIDI handler include files removed
- syncThread approach discontinued as it offers no performance benefit but degrades MIDI timing
- singleThread way is always available as an option and used by default
- Updated DOSBox SVN patch for mt32emu (for SVN r3873)
- Both patches unified and add identical new files now