Decided to change JIT functions to use GNU lightning

Instead of DIY JIT functions, I've decided to use GNU lightning. The
process of setting up JIT functions themselves is interesting and I'd like
to read and learn more about it, but the main problem is x86 assembly. I
learned the gameboy's modified version of z80 assembly somewhat fast, but
x86 is more complex and has significantly more and larger registers
involved. lightning fixes this by providing an interface of a standardized
RISC architecture while being retargetable for use with x86, mips, arm,
ppc,etc. I also decided that to seriously start working on this project I
should get rid of a few other files