- Some more Cyclone fixes, basically re-wrote all the changes I made before to the divu,divs,asl,asr etc. Hopefully they work now

- Added Stop opcode to Cyclone - Fixes Thunderforce IV
- Added support for the Genesis display mode that allows different
vertical scroll values for each column on the screen. This fixes the rocket level on Gunstar Heroes
http://www.gp32x.de/cgi-bin/cfiles.cgi?0,0,0,0,5,109