FIXED Assertion failure on startup if resolution less than 640x512 (the game
will now work at this low resolution, though note the graphics won't
look that great).
UPDATED Changed height resolution from multiples of 256 to multiples of 240
(more compatible with typical PC resolutions).
UPDATED Smoother scaling, to improve graphics quality when run at lower
resolutions (320x240 or 640x480).
UPDATED Windows version now compiled with Visual Studio Express 2010 SP1.
UPDATED Windows version now uses the Visual C++ runtime DLLs, instead of
including them in the exe (generally safer, when using 3rd party DLLs).