[Checkins] [zopefoundation/Products.ZCatalog] ce63dc: Fix various Python 3 compatibility problems.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Products.ZCatalog
  Commit: ce63dcf59ae07b69e1b9a4e1f6afff20c7166d5b
      https://github.com/zopefoundation/Products.ZCatalog/commit/ce63dcf59ae07b69e1b9a4e1f6afff20c7166d5b
  Author: Hanno Schlichting <hanno at hannosch.eu>
  Date:   2016-04-03 (Sun, 03 Apr 2016)

  Changed paths:
    M src/Products/PluginIndexes/DateRangeIndex/tests.py
    M src/Products/PluginIndexes/KeywordIndex/KeywordIndex.py
    M src/Products/PluginIndexes/PathIndex/PathIndex.py
    M src/Products/PluginIndexes/common/tests/__init__.py
    M src/Products/PluginIndexes/common/tests/test_UnIndex.py
    M src/Products/ZCatalog/Catalog.py
    M src/Products/ZCatalog/ZCatalog.py
    M src/Products/ZCatalog/plan.py
    M src/Products/ZCatalog/tests/queryplan.py
    M src/Products/ZCatalog/tests/test_catalog.py
    M src/Products/ZCatalog/tests/test_lazy.py

  Log Message:
  -----------
  Fix various Python 3 compatibility problems.

These are just simple things caught by flake8. Since a lot of the
dependencies aren't Python 3 compatible yet, real Python 3 compatibility
is a ways off.