Log Message:
Update xmame to 0.66.2.

Changes since 0.61.1 include:
- Amost everything from MAME 0.66 and MESS CVS.
- The Barath frameskipper is now enabled by default.  (suggested by
  Christopher Stone)
- Rotation has been moved to the blit core and should be a lot faster.
  (Shyouzou Sugitani)
- Analog controls work again, and the analog code is now synced up with
  the Windows code.  (Sebastien Devaux)
- The "-joydev" switch now allows a full device name, such as
  /dev/input/js0, to be specified.
- Added makecd_mame2.pl to contrib tools; this script aids with burning
  CDs with ROMs, flyers, and cabinets.  (Luc Saillard)
- Renamed "-gamma-correction" to "-gamma" to be consistent \ 
with the
  Win32 version.  It should also work now.
- An Xv-enabled build should no longer report 0 bits per pixel and stop
  on a display that doesn't support the Xv extension.  (Alexander Miller)
- The "-brightness" switch now works as in Windows.  Removed obsolete
  brightness and gamma code from sysdep_palette.
- Idle sleeping is now disabled while the onscreen configuration menu
  is displayed.  This works around a problem with key and button
  presses not registering when setting input preferences.
- The "-record" and "-playback" switches now work as in the Win32
  version.  Also, the "inp" directory is now created on startup if
  it is missing.
- MAME's disassemblers are no longer built by default.  This avoids
  having to make some ugly little patches to the core.  (Christopher
  Stone)
- Removed the obsolete 8bpp update functions from most of the targets.
  This should speed compilation and produce a smaller binary.