(MESS) nes: Properly implemented the Bandai Karaoke Studio expansion
slot. The two Senyou Cassettes (Top Hit 20 Vol 1 & Vol 2) have now to be 
loaded with the following commands "mess nes -cart karaoke -cart2 top20v1" 
(or top20v2). This is accurate to the hardware, because these expansions
had to be manually inserted into the body of the main Karaoke Studio cart 
before playing. [Fabio Priuli]
Switched rgb_t to a class, replacing macros with methods. Mappings are
as follows:

   MAKE_RGB(r,g,b)     == rgb_t(r,g,b)
   MAKE_ARGB(a,r,g,b)  == rgb_t(a,r,g,b)
   RGB_ALPHA(data)     == data.a()
   RGB_RED(data)       == data.r()
   RGB_GREEN(data)     == data.g()
   RGB_BLUE(data)      == data.b()
   RGB_BLACK           == rgb_t::black
   RGB_WHITE           == rgb_t::white

Implicit conversions to/from UINT32 are built in as well as simple
addition, subtraction, and scaling (with clamping).

As a result of being a class, some stricter typing was needed in
a few places but overall not too much.
galivan.c: add buffered spriteram to fix MT 05465; cleanups [Alex Jackson]
Jubilee Double-Up Poker updates. [Roberto Fresca]

 - Added a default clean NVRAM.
 - Found and implemented the credits input.
    The game is now working!. Still no sound.


New games added or promoted from NOT_WORKING status
---------------------------------------------------
Jubilee Double-Up Poker [Roberto Fresca]
fix SDL build (nw)
stupid
Fix SDL 2.0 build (nw)
Fix display of device tags in internal profiler [Alex Jackson]
divider matches gdarius OST
Removed some auto_mallocs in favor of dynamic_arrays.

Added option to clear dynamic_arrays; on gcc this should assert if not
done on POD (which is unsafe to memset).
peplus.c: Minor doc update - NW
gdarius is COH-1002T, the other fx1b games have 1MB VRAM
Abstracted netlist sources. This is a first step to support libraries (e.g. for opamps). [Couriersud]
v60.c: Modernized cpu core.  [Wilbert Pol]
fix emulated cpu crash being able to crash mame
fix soundchip clock + added note
(MESS) ibm5170.xml: Added Windows 95. (nw)
test code (nw)
updated prev commit with wrt irq recursion
workaround for zokuoten soundcpu NMI loop