Add a simple inheritance scheme for query bindings.
Add some very simple unit tests for that.
Supply depth to Map_NestedLoops from optimizer / manual tests.
New implementation of Map_NestedLoops, generating multiple QueryBindings for the outer rows.
A couple more like that.
I didn't read a couple of tests carefully enough.
Sort_General depends on the implicit close behavior, so get it right.
Premature close needs special care.
Merge from origin.
Merge from trunk
Need to use ShareHolder now that QueryBindings can live longer, as the TODO predicted.
Assertion was wrong when wanting to skip ahead bindings.
merge mmcm: The pipelined implementation of Map_NestedLoops.

https://code.launchpad.net/~mmcm/akiban-server/map-query-bindings/+merge/174068
Merge from trunk.
Make choice of pipeling by Map_NestedLoops explicit from the optimizer.
Default off for the moment.
Update tests and add new test that repeats with pipelining on.
Make optimizer load settings from server properties.
Backwards.
merge mmcm: Change how operators get pipeline-related options.

https://code.launchpad.net/~mmcm/akiban-server/operator-pipeline-options/+merge/174585