[NGRINDER-531] delete copyright.
[NGRINDER-530] 
- Change plugin interface name
-
[NGRINDER-528] Fix the bug which make abnormal agent system info at the
first access.
[NGRINDER-516] None ==> - in response byte.
[NGRINDER-532] Increase timeout from 20 to 20
[NOBTS] What's changed? I can't see any differences.. Ummm...