Log Message:
Updated xmess to 1.102.

Changes from 1.101:
- Everything from MAME 0.102 (http://x.mame.net/changes-mame.html) and
  MESS 0.102 (http://x.mame.net/changes-mess.html).
- Fixed a bug that could afflict MESS console emulations by preventing
  the keyboard from working.
- The default ALSA buffer size is now 50000ms instead of 250000ms,
  which reduces lag.
- Advancing frame-by-frame using shift-P works again.  Bugzilla bug 787.
- When the setup menu is closed, the keyboard state is cleared.  This
  prevents the key press that closes the menu from affecting the
  emulation.  This replaces the fix from 0.97, which wasn't working
  anymore and caused the frame-by-frame advancing to break besides.