fixed timeout bug in CThreadRep::wait() (negative timeout wouldn't

wait forever).  also fixed early return from sleep due to signal.
now forcing client to initialize CThread to ensure global mutex
gets initialized before threads are used.

mt/CThread.cpp

@@ -58,6 +58,11 @@ CThread&				CThread::operator=(const CThread& thread)
 	return *this;
 }
 
+void					CThread::init()
+{
+	CThreadRep::initThreads();
+}
+
 void					CThread::sleep(double timeout)
 {
 	CThreadPtr currentRep(CThreadRep::getCurrentThreadRep());