Multithread gdbstub and execution, with cont/halt

src/main.c

@@ -28,6 +28,7 @@ int main(int argc, char** argv)
     }
 
     // CPU simulation : create cpu0 thread
+    if(!gdbstub) cpu0->sim_ticks_left = -1; // Simulate forever
     pthread_t cpu0_thread;
     pthread_create(&cpu0_thread, 0, (void*) cpu_loop, cpu0);