First Release Candidade

First Release Candidade:
* added 12 palettes from libretro port - can be change during gameplay
* added 224p and 256p modes (PAL 240p and NTSC 240p)
* partially fixed fonts for low resolution modes
* in PAL modes there is black line before frame (so real resolution is
640x480) for pixel perfect vertical scaling
* in NTSC modes overscan is forced: it means that 8 pixels from up and
bottom are cutted - so there is perfect pixel scaling