Remove steps from StoreAdapter interface and usages.
Simple Buffer operator. Rewrite halloween test in UpdateIT for it.
Transformation of pk-affecting UPDATEs.
Detect and buffer vulnerable scans with special handling for unique indexes.
Remove auto-idle on Select_HKeyOrdered
Add buffer eagerly. Clearer names.
Don't leave a broken DMLStatement. Fix and test RETURNING.
Unnecessary TODO
Remove various isStepIsolated holders, setters and members
Update RulesTest files
Update OperatorCompilerTest files
Organize and comments
Tighten end unique index detection. Push buffer below flattens and lookups.
Timeout for safety
Plan tweaks
Another plan update
Fix expected change due to proper visibility
Use Sorter in Buffer. Don't push below Flatten and Lookup.
Minor diff cleanup
merge nathanlws: Halloween queries get explicit buffering

Merge pull request #895 from nathanlws/sql-layer/halloween-buffering
https://github.com/FoundationDB/sql-layer/pull/895