Major Description
There are some query related interfaces that need to move into the dedicated query package in spi:
(o.a.j.oak.spi) Cursor, Filter, IndexRow, QueryIndex, QueryIndexProvider
This refactoring touches a lot of existing code, that is why I'm stating the desire to move them here, with this gentle warning beforehand.
I'll announce the actual change pre and post commit, so you can state your thoughts on the matter, if any.