Use new module level aq_inContextOf method, so this works for non-wrappers as well. Still needs to be made aware of __parent__ pointers

module-level aq_acquire, aq_inner, aq_parent, etc. functions.

function so that we can write a module-level function for that functionality
as well.

from the base class.

and an object's parent by usingn the aq_parent and aq_inner *functions*,
not attributes.

Both are the canonical forms of getting to an object's parent now.

meta_type)...

'self' is a view) have an aq_chain that includes the view again.

Naturally, this branch is all about ripping this out.

so let's simply reuse Zope3's ViewPageTemplateFIle

*usually* ends up being the view, unless the provider decides otherwise.

not the context).

Log message for revision 77024:
  Read that mail again, we agreed on raising an AttributeError instead of returning None.

Log message for revision 71227:
  Step 4: Make aq_get aware of __parent__ pointers.
  (Also some comment cosmetics in _Acquisition.c)

Log message for revision 71228:
  Test aq_parent property as well (in addition to aq_parent function)

Log message for revision 71229:
  Step 5: Make aq_chain aware of __parent__ pointers.

Log message for revision 71224:
  Step 3: Make aq_parent aware of __parent__ pointers.

Log message for revision 71221:
  Step 2: Make aq_acquire aware of __parent__ pointers, even if the object
  isn't acquisition wrapped.

Log message for revision 71223:
  Add another test that tests acquisition wrappers with containers that have __parent__.

Log message for revision 71225:
  Cosmetics: adjust a piece of code that I added earlier to the indentation
  style of the overall file

Log message for revision 71226:
  Cleanup:
  * no need to introduce another variable where we check for a __parent__ attribute
  * clean up after failed getattr (it throws an AttributeError)
  * properly DECREF the __parent__ attribute when it's no longer needed and
    the wrapper that is temporarily created from the __parent__ attribute.

Log message for revision 75578:
  Added a test to Acquisition that shows the current segmentation fault problem, when Acquisition goes in circles.

Log message for revision 76140:
  First attempt to fix 'Acquisition problem' when encountering cyclic hierarchies via __parent__ pointers. [hannosch, nouri]


In addition, Hanno and Nouri's fix was expanded to not only cover circular __parent__
pointers but also to cover a mixture of circular __parent__ and aq_parent pointers
(which can occur when old Implicit acquisition meets new __parent__ pointer code).

Also cleaned up much of the comments and added more comments.

  Allow assignment to a wrapper's __parent__.

  Warming up: Make acquisition wrappers have __parent__ in addition to aq_parent
  (they point to the same thing).

work done for Infrae.

The REQUEST should not accept holds after it has been closed.

o See http://www.zope.org/Collectors/Zope/2333