5200 digital stick support
Allow 2nd joypad to press select too
Hold select(pause) for 5 seconds to return to boot menu
Added Drive turbo selection. Fixed a few builds. Added which target is building to output. Run up to 3 jobs at once during build.
Split the concept of hsync, vsync and composite sync. When composite sync used tie vsync high. The offset hsync pulse of pal/hsync is only present for 15khz composite sync. Remove rom selection since its unused.
5200 core port to mcctv/mcc216