Method PopFront

src/hx/Thread.cpp:69–90

	Dynamic PopFront(bool inBlock)
	{
		hx::EnterGCFreeZone();
		AutoLock lock(mMutex);
		if (!inBlock)
		{
			hx::ExitGCFreeZone();
			return shift();
		}
		// Ok - wait for something on stack...
		while(!length)
		{
			mSemaphore.Reset();
			lock.Unlock();
			mSemaphore.Wait();
			lock.Lock();
		}
		hx::ExitGCFreeZone();
		if (length==1)
			mSemaphore.Reset();
		return shift();
	}
	#else
	void PushBack(Dynamic inValue)
	{