Removed some unnecessary comments in previous commit. Previous commit: All of a sudden, unnoticed by the rest of us, gs3-setup.bat now calls gs2build\setup.bat which sadly got stuck with a placeholder value for GSDLHOME. Though useful for the release-kit which would replace it with a sensible value, the placeholder remains when gs3-setup.bat calls it and things look ugly. We're now forcing a sensible value if one is not assigned (e.g. by the releasekit).