Split test sims and fun sims into separate directories.

Moved the 2 thread directories.

refs #191

test/SIM_threads/RUN_test/async.py

@@ -0,0 +1,9 @@
+
+def main():
+    trick.real_time_enable()
+    trick.itimer_enable()
+    trick.exec_set_thread_process_type(1, trick.PROCESS_TYPE_ASYNC_CHILD)
+
+if __name__ == "__main__":
+    main()
+