verification of jitted ebpf code

There are some projects for ebpf in usermode, but for verification purposes you need the same code which was used in kernel. So I ripped out some jit code to run it in usermode

• x64
• powerpc
• risc-v
• s390
• sparc
• sunway sw64

And now we can make verification of jitted code - we have actual generated code for some ebpf, next we run JIT for ebpf opcodes in usermode, and finally can compare them