[Checkins] [zopefoundation/Zope] d1aa0f: Forward port of #807 (Consistently use "zope.tales...

[Dieter Maurer]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Zope
  Commit: d1aa0f463d0721d3c0e607c4d9fb5e238fd82036
      https://github.com/zopefoundation/Zope/commit/d1aa0f463d0721d3c0e607c4d9fb5e238fd82036
  Author: Dieter Maurer <d-maurer at users.noreply.github.com>
  Date:   2020-03-31 (Tue, 31 Mar 2020)

  Changed paths:
    M .travis.yml
    M CHANGES.rst
    M constraints.txt
    M requirements-full.txt
    M setup.py
    M src/Products/Five/browser/pagetemplatefile.py
    M src/Products/PageTemplates/Expressions.py
    M src/Products/PageTemplates/engine.py
    M src/Products/PageTemplates/expression.py
    A src/Products/PageTemplates/tests/input/InterpolationInContent.html
    A src/Products/PageTemplates/tests/input/PathAlternativesWithSpaces.html
    A src/Products/PageTemplates/tests/output/CH_CheckNotExpression.html
    A src/Products/PageTemplates/tests/output/CH_CheckPathAlt.html
    A src/Products/PageTemplates/tests/output/CH_PathAlternativesWithSpaces.html
    M src/Products/PageTemplates/tests/output/CheckNotExpression.html
    M src/Products/PageTemplates/tests/output/CheckPathAlt.html
    A src/Products/PageTemplates/tests/output/InterpolationInContent.html
    M src/Products/PageTemplates/tests/output/Loop2.html
    A src/Products/PageTemplates/tests/output/PathAlternativesWithSpaces.html
    M src/Products/PageTemplates/tests/output/RepeatVariable.html
    A src/Products/PageTemplates/tests/testC2ZContext.py
    A src/Products/PageTemplates/tests/testChameleonTalesExpressions.py
    M src/Products/PageTemplates/tests/testHTMLTests.py
    A src/Products/PageTemplates/tests/testZopeTalesExpressions.py
    M src/Products/PageTemplates/tests/test_pagetemplate.py
    M src/Products/PageTemplates/tests/test_persistenttemplate.py
    M src/Products/PageTemplates/tests/util.py
    M versions-prod.cfg

  Log Message:
  -----------
  Forward port of #807 (Consistently use "zope.tales" as TALES implementation) (#810)

* resolve merge conflicts

* - add forgotten version update

* - remove Python 2 compatibility code

* - update to zope.hookable 5.0.1 to fix Python 3.9 issues

* - allow Python 3.9 to fail until Zope's dependencies support it

* - still need to list the failing job in the matrix

* merge in #812

Co-authored-by: Jens Vagelpohl <jens at netz.ooo>