[xort] fixed problem in optimizer
[xort,xvm] optimizer and jit...
[xvm] jit continue
[xort,xvm] fixed problem in optimizer with metainstructions
[xvm] first jit function...
[xvm] continue with jit...
[xvm] continue with jit
[xort, xvm] continue with jit and metainstructions
[xort] compilation fix
[xort] added several meta instructions for jit