Log Message:
Update xmess to 0.99.

Changes since 0.97:
- Everything from MAME 0.99 (http://x.mame.net/changes-mame.html) and
  MESS 0.99 (http://x.mame.net/changes-mess.html).
- The SVGAlib target no longer fails silently under certain conditions.
  (Hans de Goede)
- Removed some unnecessary calls to exit() and fixed a few memory leaks
  in the X11, Xv, and effects code.  (Hans de Goede)
- The SVGAlib driver now handles __svgalib_tty_fd == -1.  This allows
  it to work with newer releases of SVGAlib.  (Hans de Goede)
- Removed "-xv/-xvext" from the manpage. Bugzilla bug 535. (Erik Hovland)
- Updated the joystick types in the manpage.  Bugzilla bug 737.
- Fixed some typos in the documentation.  Bugzilla bug 738.  (Erik Hovland)