Log Message:
Update xmame to 0.74.1.

Changes since 0.72.1 include:
- Everything from MAME 0.74.
- Reapplied David Mitchell's fix for the XInput inertial effect when
  a mouse or spinner is used.  (Jake Stookey)
- Added support for controllor setup via "-ctrlr".  Note that \ 
"-hotrod"
  and "-hotrodse" have been replaced by "-ctrlr HotRod" and \ 
"-ctlrlr
  HotRodSE".