Road Rash Improvement.

v1.1
+ fixed, in rare cases gave error #3 screen.

additions:
+ support for mp3 music with mednafen-doomday mod (put 1.mp3, 2.mp3,.. in /bgm folder where's rom).
+ support for music with sega-cd.
+ engines sound with music available with mp3/sega-cd. (button 'B' in main menu to switch)

improvements:
+ code optimization - better FPS, even without overclocking.
+ fixed compatiblity with overclocked emulators (30 fps limit).
+ with higher fps rates , player's bike turns speed no longer reduces.
+ reduced oil quanity on levels 4 and 5 as in Road Rash II.

bugfixes:
+ fixed badly working pause button.
+ fixed bug if press 'start' while track loading.