[PATCH 5/5] pack-objects: Use new worker pool

Before we had threads doing the delta finding work, and the main thread was load balancing the threads, i.e. moving work from a thread with a large amount left to an idle thread whenever such a situation arose. This moves the load balancing to the threads themselves. As soon as one thread is done

[PATCH 5/5] pack-objects: Use new worker pool

Before we had threads doing the delta finding work, and the main thread was load balancing the threads, i.e. moving work from a thread with a large amount left to an idle thread whenever such a situation arose. This moves the load balancing to the threads themselves. As soon as one thread is done