Log Message:
Update xmame to 0.82.1.

Changes since 0.81.1 include:
- Everything from MAME 0.82 (http://x.mame.net/changes-mame.html) and
  MESS 0.82 (http://x.mame.net/changes-mess.html).
- Improved the message that is displayed when a suitable X11 visual
  cannot be found.  Fixes Bugzilla bug 219.  (Christopher Stone)
- Fixed the most egregious formatting errors in the xmame.6 manpage.
  (Andre Majorel)