Jit: Misc fixes, move_exception, blocking mode, self-cosim

OP_MOVE_EXCEPTION handler was neglecting to reset.
Blocking mode was failing to signal empty queue in some cases
Self-cosim was including operations in traces that can't be done twice
Added OP_MOVE_EXCEPTION to self cosim's no-replay ops (it has side effects)
Restored threshold of 1 to self-cosim (now able to boot device with self-cosim)
When threshold < 6, disable 2nd-level translation filter
3 files changed