Zope.configuration

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- Correctly locate packages with a __path__ attribute but no
__file__ attribute (such as namespace packages installed with setup.py
install --single-version-externally-managed).

- Allow "info" and "includepath" to be passed optionally to context.action.

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- Prefer the standard libraries doctest module over zope.testing.doctest.

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- Jython support: use ``__builtin__`` module import rather than assuming
``__builtins__`` is available.

- Jython support: deal with the fact that the Jython SAX parser
returns attribute sets that have an empty string indicating no
namespace instead of ``None``.

- Allow ``setup.py test`` to run at least a subset of the tests that
would be run when using the zope testrunner: ``setup.py test`` runs
53 tests, while ``bin/test`` runs 156.

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- Adjust testing output to newer zope.schema.

- Prefer zope.testing.doctest over doctestunit.

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- Removed dependency of `zope.deprecation` package.

- Don't suppress deprecation warnings any more in 'zope.configuration'
package level. This makes it more likely other packages will generate
deprecation warnings now, which will allow us to remove more
outdated ones.

- Don't fail when zope.testing is not installed.

- Added missing ``processFile`` method to ``IConfigurationContext``.
It is already implemented in the mix-in class,
``zope.configuration.config.ConfigurationContext``, and used by
implementations of ``include`` and ``exclude`` directives.

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- Added the ``exclude`` directive to standard directives. It was
previously available via ``zc.configuration`` package and now it's
merged into ``zope.configuration``.

- Changed package's mailing list address to zope-dev at zope.org,
change "cheeseshop" to "pypi" in the package's url.