SD2 update
[mr2988] use ACE_Atomic_Op values instead of volatile in some WorldThread related variables. Possible solve part of false-freezes (need test). picked from TC, original author jackpos
[mr2989] add lock in WorldSocket, picked from TC, original author jackpos. testing, must solve crushes in WorldSocket::wait
[mr2990] Increment the reference count of m_task in Thread::start() before spawning the actual Thread that will execute the task, otherwise the thread might finish, decRef the task and delete it. picked from TC, original author jackpos. need test