Remove OPT_GAMES & OPT_EDGEOVERLAY build options.
Amount of core CHDK memory saved with these options is negligible (<800 bytes).
ixus200_sd980: filewritetask support, loader code update
add option to auto start script when alt mode entered, from waterwingz in http://chdk.setepontos.com/index.php?topic=10933.msg107410#msg107410 with modifications
add "combined" option to lua get_meminfo, make it the default