mame 0.149u1新模拟支持游戏

* Created a new tilemap_device， which can be used to declare a     tilemap in the machine config， and which also is a tilemap object     itself. The tilemap device will look for shared memory regions     called "" and "_ext" and automatically plug them into     the tilemap. The device also provides write handlers that can be     used to write to the tilemap memory and mark tiles dirty， saving     the need for each driver to write their own. -Device system: moved required/optional device finders to a new header devfind.h.  [Aaron Giles] -Atari drivers: removed all playfield and alpha memory and tilemap  [Aaron Giles] variables， apart from those needed by atarivc-using games (this will become a device in a future update). Updated all Atari 16-bit drivers to use the new tilemap_device instead， which provides all the needed functionality in a more generic way. -volfied.c: Added dipswitch locations to the Volfied sets. [Brian Troha]