+7/21/98 - add a --enable/disable-sound option.
+
+7/11/98 - Ground collision detection
+
+7/3/98 - Generate and store the transform matrix when rendering by
+ material property so we don't have to push, transform, pop
+ continually. See mesa code for gluLookAt()
+
+6/11/98 - convert to static libraries and reduce libtool usage ...
+
+6/11/98 - Converted to GL_FOG_EXP2
+
+5/29/98 - Widened edges of tiles to overlap a bit. This should help
+ reduce floating point induced gaps between tiles.
+
+5/27/98 - Rewrote airport list manager using an STL "map" (associative
+ array) for quick lookup.
+
+5/26/98 - Impose a maximum triangle area during scenery generation so
+ even very flat areas will get split into a few smaller sub
+ triangles.
+
+5/26/98 - Overhaul view parameter generation ... see if we can piggy
+ back off of larcsim calcs, and consolate potentially
+ redundant code -- Norman Vine
+
+5/24/98 - Fine grain view frustum culling
+
+5/20/98 - fix winding problem with tri-strips in obj.c (wait for next
+ version of stripe)
+
+5/17/98 - Course grain (tile based) view frustum culling
+
+5/6/98 - HUD updates from Jeff Goeke-Smith.
+
+5/5/98 - Added a visual frame rate counter on the HUD.
+
+5/2/98 - Option to go full screen. call glutFullScreen()
+
+4/29/98 - Option to toggle between smooth / flat shading.
+