* Removed unnecessary VRAM read trampolines.
* Use buffered_spriteram16_device for buffered sprite RAM.
* Derive clocks from crystals.
* Reduced runtime tag lookups, unnecessary region size.
* Fix naming, spacing.
* Use generic graphics layouts, fix color usage of gfxdecode related to palette size.
* Restrict rowscroll to screen clipping rectangle.
* add some dumped data to the innotab2 driver, split from storio [Sean Riddle]
* new NOT WORKING software list entry
------
leapfrog_zippity_cart.xml:
The Princess and the Frog - Magical Bayou Adventure (500-13779-A) (UK) [Sean Riddle]
* new NOT WORKING machines
-----
Compact Cyber Arcade TV - 120 in 1 (JL2370) [Sean Riddle, taizou]
Leapster Explorer [David Haywood]
* new NOT WORKING software list entries
------------
leapfrog_leapster_explorer_cart.xml:
TinkerBell and the Lost Treasure (500-14226-A) [Dave "Foxhack" Silva]
Mr. Pencil Saves Doodleburg (500-14221-A) [Dave "Foxhack" Silva]
Adventure Sketchers (500-15340-A) (Creativity Learning Game) [Dave "Foxhack" Silva]
* new NOT WORKING software list entries
-------
vtech_innotab_cart.xml:
The Penguins of Madagascar (80-230500, US) [Dave "Foxhack" Silva]
Teenage Mutant Ninja Turtles - Turtle Power! (80-231300, US) [Dave "Foxhack" Silva]
* mobigo_cart.xml: remove jakenevalt, it's a bad dump "80-252800 - Jake and the Neverland Pirates (US).bin FIXED BITS (xxxxxx1xxxxxxxxx)"
* mobigo_cart.xml: remove dprinces, it's a bad dump "mobigo_251100.bin BADADDRxxxxxxxxx-xxxxxxxxxxxxxx"
* new NOT WORKING software list entries
------
mobigo_cart.xml:
Disney/Pixar Cars 2 (USA, rev 2?) [Sean Riddle, Dave "Foxhack" Silva]
Thomas & Friends - Really Useful Engines (USA, rev 2?) [Sean Riddle, Dave "Foxhack" Silva]
* - added German ltleappad BIOS [Team Europe, Sean Riddle]
* new NOT WORKING software list entries
------
vtech_storio_cart.xml:
Cars 2 (USA) [Sean Riddle, Dave "Foxhack" Silva]
Dora and the 3 Little Pigs (USA) [Sean Riddle, Dave "Foxhack" Silva]
Hello Kitty's Surprise (USA) [Sean Riddle, Dave "Foxhack" Silva]
Disney Princess - A Gift From The Heart & Belle's Special Treat (USA) [Sean Riddle, Dave "Foxhack" Silva]
TinkerBell and the Great Fairy Rescue (USA) [Sean Riddle, Dave "Foxhack" Silva]
Mickey Mouse Clubhouse (USA) [Sean Riddle, Dave "Foxhack" Silva]
* update notes in storio xml
* add some more known cartridge info to juicebox.xml
* Split YM2154 into a separate device
* Created fake YM2154 ROMs as placeholders
* Created new BBD sound device in src/devices/sound/bbd.cpp
* Created new mixer device in src/devices/sound/mixer.cpp
* Connected YM2154 and BBD devices
* Approximated BBD driver behavior
* Exposed analog sliders as adjusters (accessible via ` menu)
* Added sliders to layout and animated them
ymfm: refactor the code into a separate 3rdparty library
* Moved ymfm core implementation to 3rdparty/ymfm
* Split out each family (OPM/OPN/OPL/etc) into its own source file
* Added preliminary OPQ and OPZ support, still WIP
* Put all 3rdparty code into its own namespace ymfm
* Fixed various bugs reported in #8042
* Created interface class for communication between the 3rdparty engine and the emulator
* Standardized MAME implementation of all Yamaha devices based on a template class
* Created standard base class ym_generic that can be used when multiple YM chips are swapped in
* Changed YM2203/2608/2610 to embed a YM2149 as a subdevice instead of deriving from ay8910_device
* Also provided compile-time option to use a simplified built-in SSG rather than using MAME's at all (currently off)
* Consolidated MAME header files from one-per-chip (ym2151.h, ym2203.h, etc) to one-per-family (ymopm.h, ymopn.h, etc)
