@Kenneth: Re: I believe this feature is included in 1.7.
Part of the functionality from the above patches was included in 1.7 but not all.
We will add some more batch capability once we get time to add in the remaining patches and test them.
More specifically, the current withBatch aggregates a whole bunch of individual queries/commands to the database into a batch which gives greater efficiency. The functionality still to implement would partition a very large insert/update into smaller batch sizes. E.g. inserting 10,000 records may be done as 20 batches of 500.