WIP version of Sega Dreamcast emulator has been updated. Changes:
- Improved the "Shenmue tree fix" and now the trees get a nice
blending;
- Improved plant rendering in Shenmue;
- Added some comments in the renderer to explain how the above fix works;
- Added fast-forward key (page up);
- Added define "INCLUDE_DEV_TOOLS";
- Updated compiling-advanced.txt.