Merge "LocklessQueue: move values into Entries instead of copying." into main

public:

    bool isEmpty() { return (mPush.load() == nullptr) && (mPop.load() == nullptr); }

    void push(T value) {

    void push(T&& value) {

        Entry* entry = new Entry(std::move(value));

        Entry* previousHead = mPush.load(/*std::memory_order_relaxed*/);

        do {

    public:

        T mValue;

        std::atomic<Entry*> mNext;

        Entry(T value) : mValue(value) {}

        Entry(T&& value) : mValue(std::move(value)) {}

    };

    std::atomic<Entry*> mPush = nullptr;

    std::atomic<Entry*> mPop = nullptr;