Collective-indexing

-------------------------------

* Add `aq_inner` to prevent infinite recursion with `safe_hasattr`.
[witsch]

-----------------------------

* Make sure we get REQUEST correctly in PathWrapper.
[tesdal]

-----------------------------

* Respect overridden indexing methods to prevent erroneous indexing and
generally allow special handling.
[witsch]

* Fix leftover index entry after renaming an object.
[witsch]

* The bad monkey smacked back with a vengeance, but was finally tamed.
[witsch]

* Smacked a bad monkey that was checking for nonexisting attribute
getObjPositionInParent.
[tesdal]

-----------------------------

* Fix bug regarding different types in the queue reducer logic.
[fschulze]

* Fixed renaming of content items by replacing `PloneTool.reindexOnReorder`
with a saner version that doesn't rely on the catalog.
[witsch]

* Various fixes, cleanups and optimizations.
[witsch]

* Fixed monkey patches so that normal indexing remains functional when queued
indexing has been deactivated (or the GS profile had not been applied yet).
[witsch]

-------------------------------

* Initial release
[tesdal, witsch]