Full screeen mode now correctly centers the image on wide screen
monitors. In addition, the virtual screen width has been reduced in size
back to what you would see on a TV with a modest amount of overscan.
Assuming all is well with this commit, this will be our 2.1.0 release.
Yes, there are still some regressions in a few games that we are aware
of, but the improvements over the last official release are too great to
hold this back any longer. :-)