Nouvelle mise à jour de Mame:

Source Changes
More Sega C2/Genesis-based games cleanup: [Aaron Giles]
* fixed crashes introduced in last version
* centralized interrupt generation for all Genesis-based games
* implemented protection correctly for Puyo Puyo 2

Changed validity checks to use hashes for speed. Also changed them to only
run on the drivers in the source file of the current game, rather than on all
games, in non-debug builds. And fixed the coinage sorting check so that it
doesn’t depend on the linker to order the strings in a particular way.
[Paul Priest]

Removed -skip_validitychecks option now that the time to execute the checks
is not as bad. [Aaron Giles]

Improved speed in Top Gunner by pre-decoding the vector processor microcode.
Also added a shift register to produce the LCD-like look of the score and
other numbers. [Mathis Rosenhauer]

Nintendo Super System sound update: [R. Belmont]
* Fixed bugs in SPC700 ADC, SBC, ADDW, SUBW, MUL, DIV, & CLRV opcodes
* Fixed several APU hardware/timer issues
* Added accurate sound DSP emulation from the latest OpenSPC
* Fixed some timing issues that prevented ActRaiser from syncing up
Result: generally accurate sound in the working NSS games, and in many
SNES games over in MESS as well.

Added missing vertical movement to Gatsbee. [Pierpaolo Prazzoli]

New games added or promoted from NOT_WORKING status
Laser Battle [Pierpaolo Prazzoli]
Water Balls [David Haywood]
Pop’s Pop’s [David Haywood]
Egg Hunt [David Haywood]
Zip & Zip [David Haywood]
Power Balls [Pierpaolo Prazzoli]

New clones added
Escape Kids (Asia, 4 Players) [David Haywood]
Gigandes (Japan) [Chack’n]

New games marked as GAME_NOT_WORKING
NFL Football [Aaron Giles]
Cat’N Mouse [Pierpaolo Prazzoli]
Metal Saver [David Haywood]

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